Commands Reference

FrogDB implements 250+ Redis-compatible commands plus FrogDB-specific extensions. For standard Redis command documentation, see redis.io/commands. This page lists all supported commands and documents differences from Redis behavior.

String

Fully Redis-Compatible

GET, SET, SETNX, SETEX, PSETEX, APPEND, STRLEN, GETRANGE, SETRANGE, GETDEL, GETEX, GETSET, SUBSTR, INCR, DECR, INCRBY, DECRBY, INCRBYFLOAT, MGET, MSET, MSETNX, MSETEX, LCS, DIGEST, DELEX

No behavioral differences from Redis.

Hash

Fully Redis-Compatible

HSET, HSETNX, HGET, HDEL, HMSET, HMGET, HGETALL, HKEYS, HVALS, HEXISTS, HLEN, HINCRBY, HINCRBYFLOAT, HSTRLEN, HSCAN, HRANDFIELD

Hash Field Expiry (Redis 7.4+): HEXPIRE, HPEXPIRE, HEXPIREAT, HPEXPIREAT, HTTL, HPTTL, HEXPIRETIME, HPEXPIRETIME, HPERSIST

Redis 8.x: HGETDEL, HGETEX, HSETEX

No behavioral differences from Redis.

List

Fully Redis-Compatible

LPUSH, RPUSH, LPUSHX, RPUSHX, LPOP, RPOP, LLEN, LRANGE, LINDEX, LSET, LINSERT, LREM, LTRIM, LPOS, LMOVE, RPOPLPUSH, LMPOP

No behavioral differences from Redis.

Set

Fully Redis-Compatible

SADD, SREM, SMEMBERS, SISMEMBER, SMISMEMBER, SCARD, SUNION, SINTER, SDIFF, SUNIONSTORE, SINTERSTORE, SDIFFSTORE, SINTERCARD, SRANDMEMBER, SPOP, SMOVE, SSCAN

No behavioral differences from Redis.

Sorted Set

Fully Redis-Compatible

ZADD, ZREM, ZSCORE, ZMSCORE, ZCARD, ZINCRBY, ZRANK, ZREVRANK, ZRANGE, ZRANGEBYSCORE, ZREVRANGE, ZREVRANGEBYSCORE, ZRANGEBYLEX, ZREVRANGEBYLEX, ZCOUNT, ZLEXCOUNT, ZPOPMIN, ZPOPMAX, ZMPOP, ZRANDMEMBER, ZUNION, ZUNIONSTORE, ZINTER, ZINTERSTORE, ZINTERCARD, ZDIFF, ZDIFFSTORE, ZSCAN, ZRANGESTORE, ZREMRANGEBYRANK, ZREMRANGEBYSCORE, ZREMRANGEBYLEX

No behavioral differences from Redis.

Stream

Fully Redis-Compatible

XADD, XLEN, XRANGE, XREVRANGE, XDEL, XTRIM, XREAD, XGROUP (CREATE, SETID, DESTROY, DELCONSUMER, CREATECONSUMER), XREADGROUP, XACK, XPENDING, XCLAIM, XAUTOCLAIM, XINFO (STREAM, GROUPS, CONSUMERS, HELP), XSETID

No behavioral differences from Redis.

Stream Extensions

FrogDB Only

Command	Description
XDELEX	Delete a stream entry and its backing data atomically
XACKDEL	Acknowledge and delete a stream entry in one operation

Blocking Commands

Partial Compatibility

BLPOP, BRPOP, BLMOVE, BLMPOP, BZPOPMIN, BZPOPMAX, BZMPOP, BRPOPLPUSH

Difference: All keys must hash to the same shard. Cross-shard blocking returns -CROSSSLOT. In standalone mode with allow-cross-slot-standalone = true, cross-slot blocking is still not supported because blocking requires a single shard to monitor the keys.

Key Commands

Fully Redis-Compatible

DEL, EXISTS, EXPIRE, PEXPIRE, EXPIREAT, PEXPIREAT, TTL, PTTL, PERSIST, EXPIRETIME, PEXPIRETIME, TYPE, RENAME, RENAMENX, TOUCH, UNLINK, COPY, RANDOMKEY, SCAN, KEYS, SORT, SORT_RO, OBJECT (HELP, ENCODING, REFCOUNT, IDLETIME, FREQ), DUMP, RESTORE

No behavioral differences from Redis.

Bitmap

Fully Redis-Compatible

SETBIT, GETBIT, BITCOUNT, BITOP, BITPOS, BITFIELD, BITFIELD_RO

No behavioral differences from Redis.

Geo

Fully Redis-Compatible

GEOADD, GEODIST, GEOHASH, GEOPOS, GEOSEARCH, GEOSEARCHSTORE, GEORADIUS, GEORADIUSBYMEMBER, GEORADIUS_RO, GEORADIUSBYMEMBER_RO

No behavioral differences from Redis.

HyperLogLog

Fully Redis-Compatible

PFADD, PFCOUNT, PFMERGE

No behavioral differences from Redis.

Pub/Sub

Partial Compatibility

SUBSCRIBE, UNSUBSCRIBE, PSUBSCRIBE, PUNSUBSCRIBE, PUBLISH, SSUBSCRIBE, SUNSUBSCRIBE, SPUBLISH, PUBSUB (CHANNELS, NUMSUB, NUMPAT, SHARDCHANNELS, SHARDNUMSUB, HELP)

Standard PUBLISH/SUBSCRIBE and pattern subscriptions (PSUBSCRIBE) work identically to Redis. Differences in cluster mode:

• Sharded Pub/Sub (SSUBSCRIBE/SPUBLISH): messages are routed to the shard owning the channel’s hash slot
• Regular PUBLISH: broadcasts to all cluster nodes (same as Redis)
• Subscription limits: configurable via blocking.max-subscriptions-per-client

See Redis Differences for full cluster-mode behavior.

Transactions

Partial Compatibility

MULTI, EXEC, DISCARD, WATCH, UNWATCH

Behavior	Cluster Mode	Standalone Mode
Key restriction	All keys must hash to the same slot	Cross-shard transactions supported via VLL
WATCH	Per-key version tracking (same as Redis)	Per-key version tracking (same as Redis)
Atomicity	Guaranteed within a single slot	Guaranteed across shards via VLL locking

See Redis Differences for details.

Scripting

Partial Compatibility

EVAL, EVALSHA, EVAL_RO, EVALSHA_RO, SCRIPT (LOAD, EXISTS, FLUSH), FUNCTION, FCALL, FCALL_RO

Behavior	Redis	FrogDB
Key validation	Undeclared key access discouraged but allowed	Undeclared key access returns an error
Multi-shard scripts	N/A (single-threaded)	Not supported — all keys must hash to the same shard
Lua version	5.1	5.4
redis.setresp()	Supported	Not supported

See Redis Differences for details.

Server

Fully Redis-Compatible

INFO, PING, ECHO, QUIT, COMMAND (DOCS, COUNT, LIST, INFO, GETKEYS, HELP), HELLO, DBSIZE, FLUSHDB, FLUSHALL, TIME, SHUTDOWN, BGSAVE, LASTSAVE, CONFIG (GET, SET, RESETSTAT), CLIENT (LIST, SETNAME, GETNAME, ID, KILL, INFO, NO-EVICT, UNPAUSE, PAUSE, REPLY, NO-TOUCH, HELP), SLOWLOG (GET, LEN, RESET, HELP), AUTH, ACL (SETUSER, DELUSER, LIST, GETUSER, USERS, CAT, WHOAMI, GENPASS, LOG, SAVE, LOAD, HELP), MEMORY (DOCTOR, HELP, MALLOC-SIZE, PURGE, STATS, USAGE), LATENCY (DOCTOR, GRAPH, HELP, HISTOGRAM, HISTORY, LATEST, RESET), WAIT, ROLE, LOLWUT, MIGRATE, DEBUG (OBJECT, STRUCTSIZE, SLEEP, HASHING)

Replication

Fully Redis-Compatible

REPLICAOF, SLAVEOF, PSYNC, REPLCONF

Cluster

Fully Redis-Compatible

CLUSTER (INFO, NODES, SLOTS, SHARDS, MYID, KEYSLOT, COUNTKEYSINSLOT, GETKEYSINSLOT, SETSLOT, ADDSLOTS, DELSLOTSRANGE, FLUSHSLOTS, FAILOVER, REPLICATE, RESET, LINKS, HELP), ASKING, READONLY, READWRITE

Bloom Filter

Redis Stack Compatible

BF.RESERVE, BF.ADD, BF.MADD, BF.EXISTS, BF.MEXISTS, BF.INSERT, BF.INFO, BF.CARD, BF.SCANDUMP, BF.LOADCHUNK

Compatible with Redis Stack Bloom filter commands.

Cuckoo Filter

Redis Stack Compatible

CF.RESERVE, CF.ADD, CF.ADDNX, CF.INSERT, CF.INSERTNX, CF.EXISTS, CF.MEXISTS, CF.DEL, CF.COUNT, CF.INFO, CF.SCANDUMP, CF.LOADCHUNK

Compatible with Redis Stack Cuckoo filter commands.

T-Digest

Redis Stack Compatible

TD.CREATE, TD.ADD, TD.MERGE, TD.RESET, TD.QUANTILE, TD.CDF, TD.RANK, TD.REVRANK, TD.MIN, TD.MAX, TD.INFO, TD.TRIMMED_MEAN

Compatible with Redis Stack T-Digest commands.

Count-Min Sketch

Redis Stack Compatible

CMS.INITBYDIM, CMS.INITBYPROB, CMS.INCRBY, CMS.QUERY, CMS.MERGE, CMS.INFO

Compatible with Redis Stack Count-Min Sketch commands.

Top-K

Redis Stack Compatible

TOPK.RESERVE, TOPK.ADD, TOPK.INCRBY, TOPK.QUERY, TOPK.COUNT, TOPK.LIST, TOPK.INFO

Compatible with Redis Stack Top-K commands.

JSON

Redis Stack Compatible

JSON.SET, JSON.GET, JSON.DEL, JSON.MGET, JSON.TYPE, JSON.NUMINCRBY, JSON.NUMMULTBY, JSON.STRAPPEND, JSON.STRLEN, JSON.ARRAPPEND, JSON.ARRINDEX, JSON.ARRINSERT, JSON.ARRLEN, JSON.ARRPOP, JSON.ARRTRIM, JSON.OBJKEYS, JSON.OBJLEN, JSON.CLEAR, JSON.TOGGLE, JSON.MERGE, JSON.DEBUG

Compatible with Redis Stack JSON commands.

TimeSeries

Redis Stack Compatible

TS.CREATE, TS.ALTER, TS.ADD, TS.MADD, TS.INCRBY, TS.DECRBY, TS.DEL, TS.GET, TS.RANGE, TS.REVRANGE, TS.INFO, TS.QUERYINDEX, TS.MGET, TS.MRANGE, TS.MREVRANGE, TS.CREATERULE, TS.DELETERULE

Compatible with Redis Stack TimeSeries commands.

Search

Redis Stack Compatible

FT.CREATE, FT.ALTER, FT.SEARCH, FT.DROP, FT.INFO, FT.LIST, FT.AGGREGATE, FT.HYBRID, FT.SYNUPDATE, FT.SYNDUMP, FT.SUGADD, FT.SUGGET, FT.SUGDEL, FT.SUGLEN, FT.ALIASADD, FT.ALIASDEL, FT.ALIASUPDATE, FT.TAGVALS, FT.DICTADD, FT.DICTDEL, FT.DICTDUMP, FT.CONFIG, FT.SPELLCHECK, FT.CURSOR, FT.EXPLAIN, FT.EXPLAINCLI, FT.PROFILE

Compatible with Redis Stack Search commands.

Vector Set

Redis Stack Compatible

VADD, VSIM, VCARD, VDIM, VEMB, VREM, VGETATTR, VSETATTR, VINFO, VLINKS, VRANDMEMBER, VRANGE

Compatible with Redis 8.x Vector Set commands.

Event Sourcing

FrogDB Only

FrogDB-specific event sourcing primitives built on streams. Not available in Redis.

Command	Description
ES.APPEND stream version event [field value ...]	Append event with optimistic concurrency check
ES.READ stream start [end] [COUNT n]	Read events by version range
ES.REPLAY stream [FROM version] [SNAPSHOT]	Replay from beginning or snapshot
ES.INFO stream	Stream metadata (current version, entry count)
ES.SNAPSHOT stream version data	Store a point-in-time snapshot
ES.ALL [COUNT n]	Read global $all stream across all shards

See Event Sourcing Guide for detailed documentation.

FrogDB Server Extensions

FrogDB Only

Command	Description
STATUS	Server health and shard status report
FROGDB_VERSION	Binary and active version information
FROGDB_FINALIZE version	Finalize a rolling upgrade to a version

Unsupported

The following commands are recognized by FrogDB but are not functional. They return descriptive error messages explaining why they are unsupported.

Command	Reason
SELECT (non-zero)	FrogDB uses a single database (db0). SELECT 0 is accepted.
SWAPDB	Single database model — no databases to swap.
MOVE	Single database model — no databases to move between.
SAVE	FrogDB uses continuous WAL persistence. Use BGSAVE for snapshots.
BGREWRITEAOF	No AOF — RocksDB manages WAL compaction automatically.
SYNC	Legacy replication protocol. Use PSYNC instead.
MODULE	No module architecture.
WAITAOF	Not yet implemented.

See Also

Redis Differences Behavioral differences from Redis

Redis Command Reference Standard Redis command documentation