aioredis 0.2.7

asyncio (PEP 3156) Redis support

asyncio (PEP 3156) Redis client library.

Features

hiredis parser	Yes
Pure-python parser	TBD
Low-level & High-level APIs	Yes
Connections Pool	Yes
Pipelining support	Yes
Pub/Sub support	Yes
SSL/TLS support	Yes
Redis Cluster support	WIP
Trollius (python 2.7)	No
Tested python versions	3.3, 3.4, 3.5
Tested for Redis server	2.6, 2.8, 3.0
Support for dev Redis server	through low-level API

Documentation

http://aioredis.readthedocs.io/

Usage examples

Simple low-level interface:

import asyncio
import aioredis

loop = asyncio.get_event_loop()

@asyncio.coroutine
def go():
    conn = yield from aioredis.create_connection(
        ('localhost', 6379), loop=loop)
    yield from conn.execute('set', 'my-key', 'value')
    val = yield from conn.execute('get', 'my-key')
    print(val)
    conn.close()
loop.run_until_complete(go())
# will print 'value'

Simple high-level interface:

import asyncio
import aioredis

loop = asyncio.get_event_loop()

@asyncio.coroutine
def go():
    redis = yield from aioredis.create_redis(
        ('localhost', 6379), loop=loop)
    yield from redis.set('my-key', 'value')
    val = yield from redis.get('my-key')
    print(val)
    redis.close()
loop.run_until_complete(go())
# will print 'value'

Connections pool:

import asyncio
import aioredis

loop = asyncio.get_event_loop()

@asyncio.coroutine
def go():
    pool = yield from aioredis.create_pool(
        ('localhost', 6379),
        minsize=5, maxsize=10,
        loop=loop)
    with (yield from pool) as redis:    # high-level redis API instance
        yield from redis.set('my-key', 'value')
        print((yield from redis.get('my-key')))
    yield from pool.clear()    # closing all open connections

loop.run_until_complete(go())

Requirements

• Python 3.3+

• asyncio or Python 3.4+

• hiredis

Note

hiredis is preferred requirement. Pure-python fallback protocol parser is TBD.

Discussion list

aio-libs google group: https://groups.google.com/forum/#!forum/aio-libs

License

The aioredis is offered under MIT license.

Changes

0.2.7 (2016-05-27)

• create_pool() minsize default value changed to 1;

• Fixed cancellation of wait_closed (see #118);

• Fixed time() covertion to float (see #126);

• Fixed hmset() method to return bool instead of b'OK' (see #126);

• Fixed multi/exec + watch issue (changed watch variable was causing tr.execute() to fail) (see #121);

• Replace asyncio.Future uses with utility method (get ready to Python 3.5.2 loop.create_future());

• Tests switched from unittest to pytest (see #126);

• Documentation updates;

0.2.6 (2016-03-30)

• Fixed Multi/Exec transactions cancellation issue (see #110 and #114);

• Fixed Pub/Sub subscribe concurrency issue (see #113 and #115);

• Add SSL/TLS support (see #116);

• aioredis.ConnectionClosedError raised in execute_pubsub as well (see #108);

• Redis.slaveof() method signature changed: now to disable replication one should call redis.slaveof(None) instead of redis.slaveof();

• More tests added;

0.2.5 (2016-03-02)

• Close all Pub/Sub channels on connection close (see #88);

• Add iter() method to aioredis.Channel allowing to use it with async for (see #89);

• Inline code samples in docs made runnable and downloadable (see #92);

• Python 3.5 examples converted to use async/await syntax (see #93);

• Fix Multi/Exec to honor encoding parameter (see #94 and #97);

• Add debug message in create_connection (see #90);

• Replace asyncio.async calls with wrapper that respects asyncio version (see #101);

• Use NODELAY option for TCP sockets (see #105);

• New aioredis.ConnectionClosedError exception added. Raised if connection to Redis server is lost (see #108 and #109);

• Fix RedisPool to close and drop connection in subscribe mode on release;

• Fix aioredis.util.decode to recursively decode list responses;

• More examples added and docs updated;

• Add google groups link to README;

• Bump year in LICENSE and docs;

0.2.4 (2015-10-13)

• Python 3.5 async support:

  • New scan commands API (iscan, izscan, ihscan);

  • Pool made awaitable (allowing with await pool: ... and async with pool.get() as conn: constructs);

• Fixed dropping closed connections from free pool (see #83);

• Docs updated;

0.2.3 (2015-08-14)

• Redis cluster support work in progress;

• Fixed pool issue causing pool growth over max size & acquire call hangs (see #71);

• info server command result parsing implemented;

• Fixed behavior of util functions (see #70);

• hstrlen command added;

• Few fixes in examples;

• Few fixes in documentation;

0.2.2 (2015-07-07)

• Decoding data with encoding parameter now takes into account list (array) replies (see #68);

• encoding parameter added to following commands:

  • generic commands: keys, randomkey;

  • hash commands: hgetall, hkeys, hmget, hvals;

  • list commands: blpop, brpop, brpoplpush, lindex, lpop, lrange, rpop, rpoplpush;

  • set commands: smembers, spop, srandmember;

  • string commands: getrange, getset, mget;

• Backward incompatibility:

  ltrim command now returns bool value instead of ‘OK’;

• Tests updated;

0.2.1 (2015-07-06)

• Logging added (aioredis.log module);

• Fixed issue with wait_message in pub/sub (see #66);

0.2.0 (2015-06-04)

• Pub/Sub support added;

• Fix in zrevrangebyscore command (see #62);

• Fixes/tests/docs;