Redis command to get all available keys

Question

Is there a Redis command for fetching all keys in the database  I have seen some python-redis libraries fetching them  But was wondering if it is possible from redis-client

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SCAN doesn t require the client to load all the keys into memory like KEYS does  SCAN gives you an iterator you can use  I had a 1B records in my redis and I could never get enough memory to return all the keys at once   Here is a python snippet to get all keys from the store matching a pattern and delete them   import redis r   redis StrictRedis host  localhost   port 6379  db 0  for key in r scan iter  key pattern         print key

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redis-cli -h  lt host gt  -p  lt port gt  keys      where   is the pattern to list all keys

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It can happen that using redis-cli  you connect to your remote redis-server  and then the command   KEYS     is not showing anything  or better  it shows   empty list or set   If you are absolutely sure that the Redis server you use is the one you have the data  then maybe your redis-cli is not connecting to the Redis correct database instance   As it is mentioned in the Redis docs  new connections connect as default to the db 0   In my case KEYS command was not retrieving results because my database was 1  In order to select the db you want  use SELECT  The db is identified by an integer   SELECT 1 KEYS     I post this info because none of the previous answers was solving my issue

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We should be using --scan --pattern with redis 2 8 and later   You can try using this wrapper on top of redis-cli  https   github com VijayantSoni redis-helper

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Take a look at following Redis Cheat Sheet  To get a subset of redis keys with the redis-cli i use the command  KEYS  prefix

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Get All Keys In Redis  Get all keys using the --scan option     redis-cli --scan --pattern       List all keys using the KEYS command     redis-cli KEYS

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Yes  you can get all keys by using this  var redis   require  redis    redisClient   redis createClient redis port  redis host         redisClient keys   example    function  err  keys

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KEYS pattern  Available since 1 0 0  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   Returns all keys matching pattern  Warning   This command is not recommended to use because it may ruin performance when it is executed against large databases instead of KEYS you can use SCAN or SETS  Example of KEYS command to use   redis gt  MSET firstname Jack lastname Stuntman age 35  quot OK quot  redis gt  KEYS  name  1   quot lastname quot  2   quot firstname quot  redis gt  KEYS a   1   quot age quot  redis gt  KEYS   1   quot lastname quot  2   quot age quot  3   quot firstname quot

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Updated for Redis 2 8 and above  As noted in the comments of previous answers to this question  KEYS is a potentially dangerous command since your Redis server will be unavailable to do other operations while it serves it  Another risk with KEYS is that it can consume  dependent on the size of your keyspace  a lot of RAM to prepare the response buffer  thus possibly exhausting your server s memory   Version 2 8 of Redis had introduced the SCAN family of commands that are much more polite and can be used for the same purpose   The CLI also provides a nice way to work with it     redis-cli --scan --pattern

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If your redis is a cluster you can use this script     usr bin env bash redis list   172 23 3 19 7001 172 23 3 19 7002 172 23 3 19 7003 172 23 3 19 7004 172 23 3 19 7005 172 23 3 19 7006    arr    echo   redis list    tr       n     for info in   arr      do   echo  start    info     redis info    echo   info    tr       n      ip   redis info 0     port   redis info 1     echo  ip    ip   port    port    redis-cli -c -h  ip -p  port set laker port           redis-cli -c -h  ip -p  port keys     done  echo  end

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-- Get all keys from redis-cli   -redis 127 0 0 1 6379 gt  keys     -- Get list of patterns  -redis 127 0 0 1 6379 gt  keys d     This will produce keys which start by  d  with three characters   -redis 127 0 0 1 6379 gt  keys  t    This wil get keys with matches  t  character in key  -- Count keys from command line by  -redis-cli keys    wc -l   -- Or you can use dbsize  -redis-cli dbsize

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If you are using Laravel Framework then you can simply use this    allKeyList   Redis  KEYS        print r  allKeyList     In Core PHP    redis   new Redis      redis- gt connect  hostname   6379     allKeyList    redis- gt keys        print r  allKeyList

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You can simply connect to your redis server using redis-cli  select your database and type KEYS    please remember it will give you all the keys present in selected redis database

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Try to look at KEYS command  KEYS   will list all keys stored in redis   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    UPDATE  V2 8 or greater   SCAN is a superior alternative to KEYS  in the sense that it does not block the server nor does it consume significant resources  Prefer using it

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In order to get all the keys available in redis server  you should open redis-cli and type  KEYS   In order to get more help please visit this page  This Link

[redis] Redis command to get all available keys?

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