Redis get all keys and values It seems that there is no direct method to get this. I want to see all the keys present in my Redis cluster. I could also do it like JSON. I think that the default redis. Get all keys from Redis Cache database. However, you cannot scan all keys Lua script, otherwise Redis will be blocked. Discover Dragonfly - the fastest in-memory data store for high-performance applications. *') Nov 18, 2012 · I have a redis with many keys (around 100), I want to select only Keys from type of ClassA (just an example). HSET 1000 state "ca" HSET 1000 zip "95054" INCR ca. Since the asterisk (*) or wild card symbol is supported, to retrieve all keys in redis at once, you only have to run KEYS *: KEYS * If you have a lot of keys, this may not be what you want to do - but for certain use cases, it can be quite useful to retrieve all keys in Redis at once. Mar 17, 2022 · I have a list of keys that I want to get from Redis. Try Teams for free Explore Teams Jul 16, 2012 · Starting with Redis 6. Once connected, use the KEYS * command to display all keys stored in Redis. You can get all registered Redis servers via _redis Lists all the key with redis-cli keys "*" Gets size with redis-cli DEBUG OBJECT; sorts the script based on the name prepend with the size; This may be very slow due to the fact that bash is looping through every single redis key. I am currently using pipeline. lindex("supplier_id",index) end May 4, 2017 · key_values = Rails. I am creating a node API using javascript. smembers('data_type:' + key_name) return collect Generally most of the index's have about 100 keys, each key is about 1KB, so this script would have a 100-120KB response size under ideal circumstances. Is it possible to select just the relevant keys and get them all with one function? May 5, 2018 · I know I can use KEYS [the_key]:* to get all keys that match. Mar 13, 2018 · how to get multiple keys' values in redis? for example, keys are x, y, and z. For example, with the pattern {a}h*llo , Redis would only try to match it with the keys in slot 15495, which hash tag {a} implies. Is there any option to get all the items at once whenever necessary so that I can get all the data and also individual data wherever necessary? Feb 14, 2023 · In redis I'm planning to store key as a unique string and value will be a list. Mar 22, 2012 · $ redis-cli --eval show-persistent-keys. For example: SET user:1:name "John Doe" SET user:1:email "john@example. Again, as an example: Nov 28, 2013 · How to get all keys with their values in redis. Explore Teams Jul 17, 2015 · Redis / Get all keys & values from redis with prefix. For example, I can do that to get the following: For example, I can do that to get the following: 127. Use Case(s) In Python, using Redis as a NoSQL database or caching system is common. , GET, SET, DEL, etc. Feb 20, 2015 · Redis / Get all keys & values from redis with prefix. The optional WITHSCORES argument supplements the command's reply with the scores of elements returned. Transpose the way you store the data. set('google:3',200) rc. call('KEYS', ARGV[1]) return table. e. Feb 12, 2014 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Is this encrypted key values? (This is my first query) Then, This result doesn't change if I open the application in multiple browsers. forEach(System. first example. Jan 16, 2019 · How to get all keys with their values in redis. When we want to fetch ID related keys we can use ID_ as prefix to fetch. So using these, you can handle non-existent keys in a cleaner way. #263. Right now, this is my implementation: ` List&lt;string&gt; planIds = . import redis r = redis. It's not good practice to fetch all keys using '*', It will overhead to application if you have huge keys in Redis. The use case for getting all keys and values from Redis includes cache inspection or debugging, data migration, and bulk data processing. Then you can use the TYPE command to check what type is a given key, if it's a list you can retrieve the elements inside using LRANGE mykey 0 -1. Examples Apr 26, 2016 · You can get all values with GetValues() to return a List of values or GetValuesMap() to return a dictionary of key values, e. ACL categories: @read, @string, @fast, Returns the values of all specified keys. GET key [INDENT indent] [NEWLINE newline] [SPACE space] [path [path ]] Available in: Redis Stack / JSON 1. keys("*"); keys. Jan 8, 2016 · KEYS is a dangerous command - it blocks all other operations while running and, depending on the dataset, could consume a lot of RAM. We found out that there is a simple way offered by Redis to read keys in one go. All data are stored and read back as bytes. Sep 11, 2012 · I have a bunch of keys of the following pattern: config:id:attr Now I want to read all the configs by first finding all the keys starting with config:, and then retrieving their associated values. While both commands achieve similar results, they have different performance characteristics and use cases. I created a redis-client in my app and am able to get values for perticular key. Aug 6, 2020 · There's a flaw in the Lua script. Keys are never interpreted as… well, anything: they are simply inert names. KEYS * will list all keys stored in redis. Just wondering on how to enhance that scripting part to get values related to all keys (or multiple keys) by just making one call to redis server. If Oct 9, 2012 · Basic question: Using Node. I get 80k keys and it loops through each key to get the value and the hash map is populated with key and value. io/commands/scan where it says: "Since these commands allow for incremental iteration, returning only a small number of elements per call, they can be used in production without Dec 13, 2019 · I have a Redis cache, I have set a few keys in that, and now I need to get all the keys and their values. I have found the command Keys with a pattern: Sep 18, 2011 · I know the KEYS command, but that only returns the keys (I'm guessing all of the keys with type String), and apparently sets aren't considered keys. I mean: [EB, HY, LV, LW, MB, NV]. Hash. HSET 3000 state "ny" HSET 3000 zip "12345" INCR ny. Jedis; public class RedisDBExport { public Jan 27, 2024 · We started this tutorial with an intention to learn about how we can read all the matching keys in Redis. At a fundamental level, it sounds like what you really have here is a job queue (and a second job queue for the successful first jobs). Redis stores all data as key-value pairs. Jun 3, 2020 · To get all keys: redis-cli KEYS '*' to get the value for a key: redis-cli GET <your-key> and if you want all values: for i in $(redis-cli KEYS '*'); do redis-cli GET $i; done and finally all keys and values: for i in $(redis-cli KEYS '*'); do echo $i; redis-cli GET $i; done Example 1: Retrieving all keys and their values: In this example, the keys command is used with a wildcard '*' to fetch all keys. 1. KEYS is expensive and the index of a key isn't going to stay the same if you are adding/removing keys a lot. second : mymap = r_server. Redis : Querying based on matching key pattren. SCAN is not much better, if you have allot of keys it can require hundreds of roundtrips to redis to scan the whole keyspace. Jan 27, 2018 · This works but when i try to get all the keys (and see it there) I get: //This returns 0 keys ( ( RedisTemplate ) cacheManager. The connection errors you're getting are because of that. 15. Dec 2, 2016 · 1/ Is there another way of scanning Redis to get values or key / value pairs and not only keys ? I tried hscan with as follows : hset myindex 7:12:321 '{"some:"JSON"}' hscan myindex MATCH 7:12:* But it destroys the performance (almost 4s for the 50000 entries) Redis stores data in key-value pairs, and you can use the `KEYS` command to get all of the keys in a Redis database. Oct 21, 2015 · I have a hash in redis. getCache("test"). String. Redis how to query all keys only on one db. llen("supplier_id")-1) do |index| element << redis. cache. 67. 4. To avoid overhead issue we always can store keys using some prefix like ID_ (ID_607890). On the downside this may block for too long (appears fine for 1 M keys). In redis, I have values: redis> get u_trade_1 "0" redis> smembers st_a_1 1) "1" 2) "1500184800" 3) "1532588400" redis> smembers info_g_1 1) "1" 2) "100" 3) "1299" 4) "1399" 5) "9970" Example 1: Getting all keys in Redis ``` import redis. May 30, 2012 · How do I get the value of multiple keys from redis using a sorted set? zadd Users 0 David zadd Users 5 John zadd Users 15 Linda zrevrange Users 0 -1 withscores This will have two users in it. In this comprehensive guide, we‘ll dig deep into Redis GET, KEYS, namespaces, best practices, use cases and everything in between. I've managed to store cached values from Drupal, but I'm looking to investigate a bit further and view the value stored in cache_my_custom_cache. To retrieve all key-value pairs in Redis, you can use the KEYS command to get a list of all keys and then use the GET command to fetch the corresponding values. set(' Feb 8, 2020 · If you want to get them on one single command, the best you can do is . The iterator part to get the list of keys takes few seconds, it is the for loop to get the values that take time. You have 7m keys you may need to cache the out put of the keys to a file. 1: Apr 28, 2011 · I think you need to store a separate count for the unique values. lua to get all keys without an expiration time. 127. Redis to work with Redis, when you call IDatabase. This command will return a list of all keys in the current database. The key is always a string which is used to retrieve associated values. command key field value. Conclusion. Redis Cloud Fully managed and integrated with Google Cloud, Azure, and AWS. May 10, 2024 · That was the quick answer. So a better solution might be pass cursor as argument to your script. I tried KEYS user-1-*, but it only give all the keys, not their values. You can also use redis-cli to get a list of all keys using the following syntax: $ redis-cli KEYS \* Feb 20, 2023 · 3. Keys(pattern: "queue:*", pageSize: 100); How can I do the same thing for values, meaning getting the list of values using a specific key pattern as above ? More of Redis. 1:6379> KEYS c_Track:* 1) "c_Track:6c93a5c1-77e9-4c4a-9232-bf182713a02e" 2) "c_Track:2c9d99c2-af37-4de9-ac64-b48f339e97a9" 3) "c_Track:9e7fd190-86d9-4b4a-9a70-7bf4c7768eef" 4) "c How to get all keys with their values in redis. Overview of Redis Get All Keys Purpose of Redis Get All Keys. Redis(host='localhost', port=6379, db=0) keys = r. 0 Time complexity: O(N) when path is evaluated to a single value where N is the size of the value, O(N) when path is evaluated to multiple values, where N is the size of the key Sep 21, 2015 · KEYS is evil - it can bring your Redis server to its knees in a blink of an eye so it should be considered as a last resort, if at all. I have a partial key 1111, and I want to return the two keys 1111-2222-4444, 1111-2222-3333 May 26, 2017 · Avoid using redis KEYS command, as it blocks all redis clients while it executes. getNativeCache() ). Redis)?. This is why you can't "get the values". A key is the unique name of a piece of data (which could be a String, a List, Hash, or any of the other redis data types) within a database. If you're looking for a way to find keys in a subset of your keyspace, consider using SCAN or sets. Apr 18, 2024 · Explore the purpose, benefits, and potential drawbacks of using Redis Get All Keys, along with syntax, filtering, and best practices for efficient key retrieval. In this guide, we’ll explain how each command works, provide examples, and discuss the advantages and limitations of each. set('google:',100) rc. Nov 25, 2014 · collect = [] for key_name in redis. Have 5 hashes each with 50k values. But no method there for all the keys. Keys(pattern: "foo") shouldn't be used if we are using 2. Jan 31, 2020 · I am newbie in redis, Now I want get all keys in one db without knowing about keys or pattern of keys. . ClientList() but key values are shows like \skdkhciduhcahoaids_Data \skdkhciduhcahoaids_Internal. What is optimal way to search Redis keys by prefix? 0. Edit: I have tied the below code, but it's giving an exception on 3rd line. You should find a way to use the key if at all possible. You'll need to maintain the list of any new IDs being added or removed. Instead, you can use HSCAN to incrementally iterate the hash. what is the way to see all keys in Redis cluster? $ redis-cli -h hostname -p 90001 -c hostname:90001> KEYS * (empty list or set) // I have data on my cluster Jan 30, 2023 · Just enter KEYS followed by a specific pattern, and Redis will search the database for all keys that match that pattern. I want to retrieve all keys along Nov 10, 2019 · Try to look at KEYS command. Products. getn(keys)" 0 user_* But this will still block your server for as long as it scans the whole database, as Redis is single-threaded. Oct 10, 2013 · My question is not how to retrieve values for each unique data type or data-type related at all. Redis Get All Keys Command – Retrieving All the Keys in Redis. I have the following code: public IEnumerable&lt;KeyValuePair&lt;K, V&gt;&gt; I have a db with about 350,000 keys. Jan 5, 2017 · To do this efficiently only using Redis, you would have to keep an updated, "Redis-queryable", SET or LIST of success/completed keys. first and example. UPDATE: With Redis 6. The keys("*") command retrieves all keys in the current database. Jul 12, 2016 · I am working on a python project using redis, after a few researches I didn't find anything that explain how to make a get() on a string containing a wildcard '*'. Also retrieve the complete list of keys using a pattern: var keys = server. Feb 2, 2024 · Use keys() to Get All Keys in Redis Database Use scan_iter() to Get All Keys in Redis Database Use zip_longest to Get All Keys in Redis Database The Redis design system will be familiar if you know JSON. I mean the similar Apr 10, 2024 · How to get all values by wildcard key in redis. Key-value list in Redis. The key identifies and retrieves the value, similar to a variable name in code. If it is a Set you'll use instead SMEMBERS mykey and so forth Jan 24, 2022 · In Redis cache I have 3 keys. Jan 30, 2023 · If you want a list of all keys, use the asterisk (*). append( redis. If you want a list of all keys, use the asterisk (*). Dec 8, 2015 · Just wanted to note that use of the keys command is strongly recommended against in production. 0. You can also use redis-cli to get a list of all keys using the following syntax: $ redis-cli KEYS \* Or you can limit the keys returned with a pattern. I want to get all values at a time for all such keys. Reload to refresh your session. It might block Redis for a long time, since Redis is single-threaded. The keys are May 17, 2013 · I have 2 keyspaces in my redis server: db0:keys=1,expires=0 db1:keys=36679593,expires=0 But if I run redis-cli KEYS '*' I only get keys in db0. GetObject("User*"); Oct 18, 2023 · This key space can potentially contain millions of keys, making it essential to have a mechanism to retrieve all the keys. But it is confirmed that the values are returned in the same order as you specified the list of keys, so you know that the first element returned in the list is the value for the first element you passed in the list, same for the second and so on. Currently my code just loops through all keys and gets its value from the db. How to turn only Appendonly (AOF) in Redis; Using exists method in Redis; How to use Bitnami Redis docker image; Get key length in Redis; Get total memory usage in Redis; How to monitor commands on Redis server; How to get Redis logs; Bind Redis to multiple IP addresses; Publish a message to Redis channel; Get memory usage for a Nov 8, 2024 · Retrieving All Key-Value Pairs. I haven't added the code for the Iterator here, I didn't think it is relevant to my question but I can added it if needed. upto(redis. The above code works. Redis(. Depending on the command, you may also provide additional arguments. SET: Sets Aug 8, 2013 · Redis / Get all keys & values from redis with prefix. Jan 14, 2023 · In Redis, you can use the “KEYS” command to get all keys that match a pattern. Nov 20, 2016 · I'm using StackExchange. Common Redis Key Commands and Examples: Here are some common Redis key-related commands along with examples: 1. opsForHash(). multiGet(HASH_NAME, keySet); But, unfortunately this method returns only the values, without the matching keys. May 5, 2015 · Actually Redis throws errors for very edge cases, and trying to get a string key value using StackExchange. For example $ redis-cli KEYS V* will return all records starting with the The keys('*') function retrieves all keys from the Redis server. Keys, Values and Channels. memcached, or database caching) you can inspect the external cache directly. How to get list of values using key pattern with stack exchange redis library. Redis. instance_variable_get(:@data). fetch(key)}} In addition I would check beforehand the amount of keys to make sure I would not come up with a gigantic object (and if so, restrict the key_value array generated to the first 1000 items for instance). Oct 25, 2018 · This should already be registered in your service collection since it's utilized by the Redis IDistributedCache implementation. Jul 20, 2018 · I know it's not the best idea to get all values from a cache, but I have a special use case for an internal tool. 2. clients. Redis / Get all keys & values from redis with prefix. How to get value by redis-cli keys. Redis C# driver. js I would like to get all the keys in my redis db. KEYS is blocking and can consume a lot of RAM while preparing the response. In order to get all matched keys, you need to call SCAN again and again until the returned cursor is 0. Values can be one of several data structures like: Strings – Simple string values; Lists – Ordered lists of string elements; Sets – Unordered collections of unique strings Time Complexity: O(N) when path is evaluated to a single value, where N is the number of keys in the object, O(N) when path is evaluated to multiple values, where N is the size of the key JSON. How to get all keys with their values in redis. Jul 1, 2016 · How about an unpside down change. After googling,I found a sodu code about my issue, but i have no key pattern or data field in this code: Jun 24, 2024 · Our goal is to provide full-stack developers an authoritative, nuanced reference for working with Redis keys in production. element = [] 0. How to iterate over Redis keys to May 22, 2012 · I have simple redis list key => "supplier_id" Now all I want it retrieve all value of list without actually iterating over or popping the value from list. If you're using an external cache (e. More of Python Redis. 10. In Redis, all data comprises key-value pairs. Nov 8, 2024 · Employing Keys to Retrieve All Keys via Redis (Redis Get All Keys) Redis, an open-source in-memory data structure store, is widely used as a database, cache, and message broker. Sep 20, 2020 · I'm able to read individual values and deserializing the object. t. For example your hash depends on eventid and you store new_code, old_code and other stuffs inside that hash Learn 'Node Redis: Get All Keys' through our concise guide covering use cases, code snippets, and best practices. I know for standalone we use KEYS * to get all the keys. local keys = redis. It is basically a simple key value store where the values are data structures like Lists, Hashtables e. The data type accepts and maps between the string type of field and values. I am using the Spring Redis API: public StringBuffer getAllKeys Nov 24, 2022 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Now I would like to call something like foreach(key in Redis) and get all keys in the redis. Feb 5, 2021 · Redis doesn't support querying data out of the box. 1111-2222-4444 1111-2222-3333 1112-2222-3333. I have thought in keys * which return every key in database. Redis-python setting multiple key/values in one operation. ) rc. Apr 9, 2015 · You can use below kind of code to get all the keys at the same time, and it returns a set of keys. call. To get the values of all keys you can use a for loop to iterate over the keys and call the get() function for each key. Best Practices Avoid using the keys('*') command in a production environment because it can degrade performance. Apr 2, 2018 · There is no way to return the key:value pairs list, since Redis MGET command just returns a list of values. smemembers('data_type:index'): collect. May 25, 2016 · I am using Redis cache for caching purpose (specifically stackexchange. Right now I am doing GetAllKeys, and then going in a foreach loop on all items and selecting just the relevant keys. Dec 14, 2016 · You can use the SCAN command to get all keys from Redis. they have their own values a, b, and c respectively. Jedis; Jedis jedis = new Jedis("localhost"); Set<String> keys = jedis. Don't use KEYS in your regular application code. map{|key| {key: key, value: Rails. Dec 26, 2023 · It can be used to get a list of all keys, to get all keys that match a given pattern, and to get all keys that have a given value. Note: The KEYS command is a blocking command. redis get multiple key's values in a single query? 0. Nov 4, 2024 · Redis provides two primary options for fetching keys: KEYS and SCAN. redis - see if a string contains any key from a set of keys. For your example of searching people by phone number and name, you could do something like. hgetall('example. KEYS Command. Redis won't throw an exception if the key doesn't exist. Mar 22, 2017 · You can use HVALS commands to get all values in the hash. Rather, my question is: Is there a way to say "hey Redis, return to me every string value in the database" without having to ask for the keys, then query for the values based on the keys returned? If a pattern can only match keys of one slot, Redis only iterates over keys in that slot, rather than the whole database, when searching for keys matching the pattern. OBJLEN How do I get the value of multiple key's that value is hash set in Redis(StackExchange. jedis. Jun 27, 2018 · In my project, I use redis. ), and key is the name of the key associated with the operation. keys. Redis Keys, Values and Data Structures. Dec 28, 2020 · I have set two keys both with user 'john' followed by different phone numbers, so when I need all the keys which starts with john, we can use 'keys john*' to get all the keys which starts with 'john'. The workaround would be to create a separate list or hashtable of IDs and store that in the Redis. I have a list of keys that I need to get from the cache. First, I need to get all the values associated with a key by providing the key as input. Redis hash data structure to store the dataset in the hash key command and here it’s used as the companys as keys. Oct 16, 2013 · I would like to get all keys, with its values, from a hash, where the keys match a specific pattern. Second, I want to get all the keys associated with a value by providing one of the value in the values list. 31. StackExchange. And, I want get in one query only the first level keys. Sep 9, 2015 · Update: Though the suggestion above helps you get the desired output, the redis KEYS command is evil as the others mentioned. 7. It uses the DEBUG OBJECT command and scans the db, identifying groups of keys and estimating the percentage of space they're taking up. However, if the hash is very large, it's always a bad idea to call HVALS or HGETALL. x of Spring-Data-Redis and the current version uses Mar 2, 2022 · How to get all the keys values from Redis Cache in C#? 4. A glob pattern is a string that matches a set of strings. Using Namespaces; Retrieving All Existing Keys; Like other non-relational database engines, wrapping your mind around how Redis handles data structures and associations can sometimes be difficult. However this takes almost 2 minutes to do, which seems really slow, redis-benchmark gave 100k reqs/3s. I use redis with the c# library ServiceStack. 1:6379> keys XXXX:* 1) "XXXX:0" 2) "XXXX:1" But I want to get the values, not the keys! Option 3: How can I do it rather than putting the value into the key: May 17, 2022 · Get All Keys with values. getn(keys) Use as: EVAL "local keys = redis. – Dec 1, 2015 · I have a Redis database with the following structure. So the command: KEYS * should return all the keys in the database. It really sounds like the structure you are wanting is not a set but a hash. : redis-cli keys number_* | xargs -L 1 redis-cli get Use MGET , i. Dec 3, 2015 · But, If you don't have the hash names, Redis supports regex in keys command and you can make an appropriate regex to pass in this command to get your desired hash names, and then fetch one by one. out::println); ``` This code creates a Jedis instance connected to Redis running on localhost. So I tried this: 127. lua , expiring to find the opposite key set of all keys with an expiration time set. As a result, you can inject it into the controller or other class where this code exists. There are about 35000+ open connections on REDIS by the other users. Jan 20, 2022 · So I'm using "StackExchange. Since you're using StackExchange. MGET key [key ] Available since: 1. c. So I choose mget function. Code database. However, I cannot figure out how to retrieve key/values across ALL databases. Then for each key, we use get to fetch the value. I wrote a function like this but it returns everything: public IOrderedEnumerable&lt;Fields&gt; GetValues(List&lt;string&gt; symbols) { Aug 17, 2014 · @MarkGravell, would you please clarify why the server. Is this necessary to get the values for keys from redis? As mentioned there is no way to get a list of all cache keys within django. HashGetAll("myhash") get all keys values from key myhash and I want get list keys myhash1 myhash2 from redis with good performance. It also can be called as $ redis-cli --eval show-persistent-keys. execute() to get all the values for these list of keys. However this takes almost 2 minutes to do, which seems really slow, redis-benchmark Oct 28, 2016 · How to get all keys with their values in redis. Instead of having 50k hashes each with 5 values. Cache. js. I noticed the method: Map<Object, Object> entries = redisTemplate. From the docs: "Warning: consider KEYS as a command that should only be used in production environments with extreme care. GetString the return value is a RedisValue (it's a struct! it can't be null excepting if it's turned into a nullable type), which has a HasValue You signed in with another tab or window. 137. Are you wondering which command is used to obtain all the keys in a database like Redis? One straightforward way to retrieve all keys is by using the KEYS Sep 2, 2016 · I'm using the azure redis cache with a . call('get',KEYS[1])" 1 foo to get the value of single key. keys( "*" ) But this returns true: Nov 5, 2023 · Welcome fellow developer! Redis is an incredible technology for blazingly fast data access, but properly understanding keys and values can be tricky. I can see only StringGet(string key) method which takes a key as a parameter. Although simple, we discussed how this puts a strain on the resources and is therefore not suitable for production systems. You'll have to "split" your keyspace to little chunks like in your first example and process each one independently Jan 13, 2022 · My issue here is the performance, it takes a long time (>30 mins) for this hash map to be populated. Oct 30, 2012 · It will work if you have small number of keys in Redis. By using the tips and tricks in this article, you can get the most out of the `KEYS` command and use it to efficiently manage your Redis data. Jun 29, 2017 · Use the -L switch with xargs, i. The someServer variable is a reference to one of your Redis servers. com" Jul 20, 2014 · Now, I want to get all the values, that still not expired, which their key starts with XXXX. Was wondering is there any ways to get all the keys available in cache at any point in time. How can I get the count of keys in redis? 12. NET implementation. The KEYS command in Redis is used to retrieve all the keys matching a specified pattern. Depending on needs, we have 3 ways to store data into Redis. Redis get key pattern. Sep 14, 2015 · In Redis, when I want to subscribe to a particular key I can do something like this: SUBSCRIBE __keyspace@0__:test:foo Now, whenever test:foo is updated I receive a notification: Sep 14, 2023 · Here, COMMAND represents the Redis command you want to perform (e. How can i search the keys in db1? Feb 25, 2014 · Take a look at this project it outputs some interesting stats about keyspaces based on regexs and prefixes. Example to retrieve all the value from a list Now I have iterate over redis length. For every key that does not hold a string value or does not exist, the special value nil is returned. For instance KEYS will list all the keys matching a glob-style pattern, for instance with: keys * you'll see all the keys available. Returns the string value of a key. Sep 20, 2015 · To fetch data for all users you would first get a the list of existing users like so: SMEMBERS <channel_name>:user:index => <list of all user ids> For each id you would have to fetch the hash values: asynchronous each <list of all user ids> as <user_id> HGETALL channel_name>:user:<user_id> => all values of key end asynchronous each I have tried to read all the key and values inside the specific redis hash key with the below java code, import redis. I have a use case where I need to do 2 things. Jan 16, 2012 · Options 2, put Ids into sorted set then use mget to get values out, if your keys are hashes then you need to issue multiple hget, but the advantage is that you can pull out specific parts of the object that you actually need instead of everything. keys() # this will return all the keys in the current db. For example, if you want to get all keys that start with “mykey”, you can use the following command: KEYS mykey* May 10, 2024 · To get all keys in Redis, first connect to the Redis server by typing redis-cli. Apr 8, 2021 · I am trying to get the entries in a Spring Boot Cache backed by Redis How do I get all the keys from a redis cache via Spring Boot? uses 1. Ensure error handling is in place when working with Redis operations in Node. Get all keys and values: CODE_BLOCK_PLACEHOLDER_1 After getting all keys, we loop through each key and use the get() function to retrieve its corresponding value. g: var allKeyAndValues = redis. Jul 22, 2023 · Iterating over keys; Sets and hashes; Cluster and Ring; Delete keys without TTL; Monitoring Performance # Iterating over keys It's not recommended to use the KEYS prefix:* command to get all the keys in a Redis instance, especially in production environments, because it can be a slow and resource-intensive operation that can impact the performance of the Redis instance. I already tried to use "star" in the key when using the "GetObject" method something like this: User user = RedisContext. Keys() redisServer. Get all keys in Redis database with python. I have used redis as my key value store. GetValuesMap(allKeys); But depending on the number of keys you have you'll want to fetch them in batches. May 23, 2018 · I have a db with about 350,000 keys. So I have a few keys : example. second I would like to get the keys / values of example. May 8, 2024 · GETSET key value - Set key to hold string value if key did not exist HGETALL_or_default key defaultHash - Hash variant . Jan 25, 2016 · The first thing you need to understand is Redis doesn't allow you to put a set in a set - no nested data structures. Jan 14, 2023 · You can also use redis-py library to handle getting all keys and values in Redis. You signed out in another tab or window. One of its powerful features is the ability to manage keys efficiently. Dec 11, 2013 · This will be painfully slow compared to accessing an object by the key. conf should rename it to 666-your-immortal-soul just so we're clear ;) Aug 13, 2015 · I am trying to find all the keys and their values matching a specific pattern using py-redis and lua and here is my code rc = redis. HSET 2000 state "ca" HSET 2000 zip "95050" INCR ca. Then for each key, use the TYPE command to check if it's a hash. 0. Whether you‘re caching data or building a real-time service, this guide has you […] how to get all keys and values in redis in javascript? Load 7 more related questions Show fewer related questions Sorted by: Reset to default Aug 2, 2013 · Is there a function in the redis-rb gem that returns a list of all the keys stored in the DB? My end goal is to iterate over all my key/value pairs and do perform some action on them. This is the native way method that used by Redis. My question is, is there a more efficient way to get all the key value data from redis cache? Let say I have following data in redis: key value user-1-xxxx data1 user-1-yyyy data2 user-1-tttt data3 So, can I get all above records by wildcard user-1-* (including the keys and values). Redis" and I was wondering if I can get multiple values by key pattern or by key list in order to have one trip to the redis cache and get all the data that I need. 8+ instance of Redis?I read the link/page you refer to but it seems to contradict the advice given at redis. 5. Feb 26, 2015 · What should the lua script be in order to get both name_last and name_first in one go? I can implement something like: eval "return redis. I am using r. Closed zaid3tech opened this issue May 17, 2022 · 3 comments Closed RedisGears and Functions in the latest version of Redis. Filter Redis set by range of values. 12. Redis to store and retrieve items in redis cache using multiple databases. Here is the detailed step-by-step guide for each method to get all keys in Redis CLI: 1. 0, To get all the keys and its value together in a single query using the below, zrange <KEY> 0 -1 WITHSCORES. get all keys of hashes in redis. g. It uses a key-value structure and a distributed and in-memory approach to achieve a resilient database. Redis: finding keys that match some pattern. 3. Oct 11, 2017 · I am trying to get all keys and values from a REDIS db. When it comes to Redis, the “Get All Keys” command plays a crucial role in retrieving all keys stored in the database. You can set it up in such a way to track the values of all the hashes and put them into a standard SQL table. However, it is important to note that the KEYS command can be slow and is not recommended for production environments with a large number of keys. Feb 25, 2015 · I've been experimenting with Redis today. Most (But Not All) Objects Use a Key. call('KEYS', ARGV[1]) \n return table. To answer your second part, yes you can use '+' in the keys without any problem. I want to query redis, using the template, in order to get all entries whose key in a certain set of keys. 11. 0 Time complexity: O(N) where N is the number of keys to retrieve. Likewise they are no vets and values in a set - only members which are strings in your case. The `KEYS` command takes a glob pattern as its argument. And that should be the recommended way for getting all values of a Oct 15, 2015 · Here I can able to get key list and client list by using below code: redisServer. And i want to fetch several data at one time. 2. Overview of Redis Keys. In dealing with redis, there is quite an important distinction between keys and everything else. scan_iter()to get all the keys and I am appending them to a list. Mar 4, 2016 · To get a better picture at how are people using redis to model applications with relations, I recommend reading Design and implementation of a simple Twitter clone and the source code of Lamernews, both of which are written by redis author Salvatore Sanfilippo. 0, the SCAN command supports TYPE subcommand, and you can use this subcommand to scan all keys of a specified type: SCAN 0 TYPE hash Also never use KEYS command in production environment!!! It's a Aug 28, 2019 · I am using Redis cluster version redis-5. : redis-cli keys number_* | xargs redis-cli mget Important warning: KEYS is a dangerous command as it may block the server for a long time - do not use it in production! Nov 21, 2019 · But If I need to get all the items at once, I have to loop and pass 5000 keys to Redis and get the data which will make 5000 calls in Redis. Because of this, the operation never fails. EDIT: please note the warning at the top of KEYS documentation page: Time complexity: O(N) with N being the number of keys in the database, under the assumption that the key names in the database and the given pattern have limited length. BUT, If you still want to do it in 1 call, Redis also provides support to run a Lua script and there you can fetch all the records in one go. How to iterate over Redis keys to get their values? 3. Set expiration (TTL) for Redis key; Check if key exists in Redis; Iterate through Redis keys; Auto reconnect to Redis server; Get JSON from Redis; Clear all keys in Redis; Redis async await example; How to handle Redis exceptions; Count keys in Redis; Decode bytes obtained from Redis to string; See more codes Dec 6, 2015 · zeeSQL is a novel Redis modules with SQL and secondary indexes capabilities, allowing search by value of Redis keys. And that wraps up this comprehensive guide on retrieving values from keys in Redis based on the underlying data types. You can get the length of a single hash, but not when you in this case got three different keys. You switched accounts on another tab or window. KEYS command return results no matter what data type are your keys, since it searches key names. My redis db looks like this when I call keys *; aXF; x9U; lOk; So each record I have, has a unique key, generated as a random string. kiyoew ipcds tyyva egkv kjo tlywcb sdm hpmqaq ncbt tdja