Redis in Macrometa

The data store that Macrometa provides is compatible with almost all Redis API use cases.

note

This is a beta feature.

Capabilities

Because of its fast performance, Redis is a popular choice for:

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

Feature	Supported	Supported commands
String	Yes	- APPEND - DECR - DECRBY - GET - GETDEL - GETEX - GETRANGE - GETSET - INCR - INCRBY - INCRBYFLOAT - MGET - MSET - MSETNX - PSETEX - SET - SETBIT - SETEX - SETNX - SETRANGE - STRLEN - BITCOUNT - BITOP - BITPOS - GETBIT
Hash	Yes	- HDEL - HEXISTS - HGET - HGETALL - HINCRBY - HINCRBYFLOAT - HKEYS - HLEN - HMGET - HMSET - HSCAN - HSET - HSETNX - HSTRLEN - HRANDFIELD - HVALS
List	Yes	- LINDEX - LINSERT - LLEN - LMOVE - LPOP - LPOS - LPUSH - LPUSHX - LRANGE - LREM - LSET - LTRIM - RPOP - RPOPLPUSH - RPUSH - RPUSHX
Set	Yes	- SADD - SCARD - SDIFF - SDIFFSTORE - SINTER - SINTERSTORE - SISMEMBER - SMEMBERS - SMISMEMBER - SMOVE - SPOP - SRANDMEMBER - SREM - SSCAN - SUNION - SUNIONSTORE
SortedSet	Yes	- ZADD - ZCARD - ZCOUNT - ZDIFF - ZDIFFSTORE - ZINCRBY - ZINTER - ZINTERSTORE - ZLEXCOUNT - ZMSCORE - ZPOPMAX - ZPOPMIN - ZRANDMEMBER - ZRANGE - ZRANGEBYLEX - ZRANGEBYSCORE - ZRANGESTORE - ZRANK - ZREM - ZREMRANGEBYLEX - ZREMRANGEBYRANK - ZREMRANGEBYSCORE - ZREVRANGE - ZREVRANGEBYLEX - ZREVRANGEBYSCORE - ZREVRANK - ZSCAN - ZSCORE - ZUNION - ZUNIONSTORE
Generic	Yes	- COPY - DEL - EXISTS - EXPIRE - EXPIREAT - PERSIST - PEXPIRE - PEXPIREAT - PTTL - RANDOMKEY - RENAME - RENAMENX - SCAN - TTL - TYPE - UNLINK
Server	Yes	- ECHO - PING - PIPELINE - DBSIZE - FLUSHDB - TIME

Our platform has limitation on certan commands. Commands that are mentioned below return different result in some edge cases.

SETRANGE returns different value than redis server when offset of the command is greater than the length of string value.

First we set string value that has key foo.

[
  "SET",
  "foo",
  "Macrometa GDN"
]

When we use SETRANGE on that same key with index that is greater than 13 the result will be different that redis server.

[
  "SETRANGE",
  "foo_21",
  18,
  "Global Data Network"
]

Response of Macrometa platform:

{
  "code": 200,
  "result": 32
}

Response from Redis server: (integer) 37

SINTERSTORE gives the wrong value when an existing key is given as the destination.

We will add three different keys with SADD:

[
  "SADD",
  "key_1",
  "a",
  "b",
  "c",
  "d"
]

[
  "SADD",
  "key_2",
  "c"
]

[
  "SADD",
  "key_3",
  "a",
  "c",
  "e"
]

With SINTERSTORE, we will try to store the set in an existing key:

[
  "SINTERSTORE",
  "key_2",
  "key_1",
  "key_2",
  "key_3"
]

Result will be:

{
  "code": 200,
  "result": 0
}

Response from Redis server: (integer) 1

note

For Redis SET and SORTED SET datatype commands, using the same keys for the command gives a syntax error.

note

For Redis MSET and HMSET commands, using same keys for the command will give an invalid command args error.