aioredis_cluster

Redis Cluster support for aioredis (support only v1.x.x).

Many implementation features were inspired by go-redis project.

Requirements

• Python 3.6.5+
• async_timeout
• dataclasses (only for Python 3.6)

Features

• commands execute failover (retry command on other node in cluster)
• support resharding replies ASK/MOVED
• restore cluster state from alive nodes
• one node is enough to know the topology and initialize client
• cluster state auto reload

Limitations

Commands with limitations

• Keys in mget/mset must provide one key slot.

  # works
  await redis.mget("key1:{foo}", "key2:{foo}")
  
  # throw RedisClusterError
  await redis.mget("key1", "key2")

Commands are not supported

Redis methods below do not works and not supported in cluster mode implementation.

cluster_add_slots
cluster_count_failure_reports
cluster_count_key_in_slots
cluster_del_slots
cluster_failover
cluster_forget
cluster_get_keys_in_slots
cluster_meet
cluster_replicate
cluster_reset
cluster_save_config
cluster_set_config_epoch
cluster_setslot
cluster_readonly
cluster_readwrite
client_setname
shutdown
slaveof
script_kill
move
select
flushall
flushdb
script_load
script_flush
script_exists
scan
iscan
quit
swapdb
migrate
migrate_keys
wait
bgrewriteaof
bgsave
config_rewrite
config_set
config_resetstat
save
sync
pipeline
multi_exec

But you can always execute command you need on concrete node on cluster with usual aioredis.RedisConnection, aioredis.ConnectionsPool or high-level aioredis.Redis interfaces.

Installation

pip install aioredis-cluster

Usage

import aioredis_cluster

redis = await aioredis_cluster.create_redis_cluster([
    "redis://redis-cluster-node1",
])

# or
redis = await aioredis_cluster.create_redis_cluster([
    "redis://redis-cluster-node1",
    "redis://redis-cluster-node2",
    "redis://redis-cluster-node3",
])

# or
redis = await aioredis_cluster.create_redis_cluster([
    ("redis-cluster-node1", 6379),
])

await redis.set("key", "value", expire=180)

redis.close()
await redis.wait_closed()

License

The aioredis_cluster is offered under MIT license.