Upstash supports Redis client protocol up to version 6.2. Following table shows the list of supported Redis commands:

FeatureSupported?Supported Commands
StringAPPEND - DECR - DECRBY - GET - GETDEL - GETEX - GETRANGE - GETSET - INCR - INCRBY - INCRBYFLOAT - MGET - MSET - MSETNX - PSETEX - SET - SETEX - SETNX - SETRANGE - STRLEN
BitmapBITCOUNT - BITFIELD - BITFIELD_RO - BITOP - BITPOS - GETBIT - SETBIT
HashHDEL - HEXISTS - HGET - HGETALL - HINCRBY - HINCRBYFLOAT - HKEYS - HLEN - HMGET - HMSET - HSCAN - HSET - HSETNX - HSTRLEN - HRANDFIELD - HVALS
ListBLMOVE - BLMPOP - BLPOP - BRPOP - BRPOPLPUSH - LINDEX - LINSERT - LLEN - LMOVE - LMPOP - LPOP - LPOS - LPUSH - LPUSHX - LRANGE - LREM - LSET - LTRIM - RPOP - RPOPLPUSH - RPUSH - RPUSHX
SetSADD - SCARD - SDIFF - SDIFFSTORE - SINTER - SINTERCARD - SINTERSTORE - SISMEMBER - SMEMBERS - SMISMEMBER - SMOVE - SPOP - SRANDMEMBER - SREM - SSCAN - SUNION - SUNIONSTORE
SortedSetBZMPOP - BZPOPMAX - BZPOPMIN - ZADD - ZCARD - ZCOUNT - ZDIFF - ZDIFFSTORE - ZINCRBY - ZINTER - ZINTERCARD - ZINTERSTORE - ZLEXCOUNT - ZMPOP - ZMSCORE - ZPOPMAX - ZPOPMIN - ZRANDMEMBER - ZRANGE - ZRANGESTORE - ZRANGEBYLEX - ZRANGEBYSCORE - ZRANK - ZREM - ZREMRANGEBYLEX - ZREMRANGEBYRANK - ZREMRANGEBYSCORE - ZREVRANGE - ZREVRANGEBYLEX - ZREVRANGEBYSCORE - ZREVRANK - ZSCAN - ZSCORE - ZUNION - ZUNIONSTORE
GeoGEOADD - GEODIST - GEOHASH - GEOPOS - GEORADIUS - GEORADIUS_RO - GEORADIUSBYMEMBER - GEORADIUSBYMEMBER_RO - GEOSEARCH - GEOSEARCHSTORE
HyperLogLogPFADD - PFCOUNT - PFMERGE
ScriptingEVAL - EVALSHA - SCRIPT EXISTS - SCRIPT LOAD - SCRIPT FLUSH
Pub/SubSUBSCRIBE - PSUBSCRIBE - UNSUBSCRIBE - PUNSUBSCRIBE - PUBLISH - PUBSUB
TransactionsDISCARD - EXEC - MULTI - UNWATCH - WATCH
GenericCOPY - DEL - DUMP - EXISTS - EXPIRE - EXPIREAT - EXPIRETIME - KEYS - PERSIST - PEXPIRE - PEXPIREAT - PEXPIRETIME - PTTL - RANDOMKEY - RENAME - RENAMENX - RESTORE - SCAN - TOUCH - TTL - TYPE - UNLINK
ConnectionAUTH - HELLO - ECHO - PING - QUIT - RESET - SELECT
ServerACL - DBSIZE - FLUSHALL - FLUSHDB - TIME
JSONJSON.ARRAPPEND - JSON.ARRINSERT - JSON.ARRINDEX - JSON.ARRLEN - JSON.ARRPOP - JSON.ARRTRIM - JSON.CLEAR - JSON.DEL - JSON.FORGET - JSON.GET - JSON.MGET - JSON.NUMINCRBY - JSON.NUMMULTBY - JSON.OBJKEYS - JSON.OBJLEN - JSON.RESP - JSON.SET - JSON.STRAPPEND - JSON.STRLEN - JSON.TOGGLE - JSON.TYPE
StreamsXACK - XADD - XAUTOCLAIM - XCLAIM - XDEL - XGROUP - XINFO GROUPS - XINFO CONSUMERS - XLEN - XPENDING - XRANGE - XREAD - XREADGROUP - XREVRANGE - XTRIM
Cluster

We run command integration tests from following Redis clients after each code change and also periodically:

Most of the unsupported items are in our roadmap. If you need a feature that we do not support, please drop a note to support@upstash.com. So we can inform you when we are planning to support it.