aioredis 0.3.3

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, 3.2
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()

async def go():
    conn = await aioredis.create_connection(
        ('localhost', 6379), loop=loop)
    await conn.execute('set', 'my-key', 'value')
    val = await conn.execute('get', 'my-key')
    print(val)
    conn.close()
    await conn.wait_closed()
loop.run_until_complete(go())
# will print 'value'

Simple high-level interface:

import asyncio
import aioredis

loop = asyncio.get_event_loop()

async def go():
    redis = await aioredis.create_redis(
        ('localhost', 6379), loop=loop)
    await redis.set('my-key', 'value')
    val = await redis.get('my-key')
    print(val)
    redis.close()
    await redis.wait_closed()
loop.run_until_complete(go())
# will print 'value'

Connections pool:

import asyncio
import aioredis

loop = asyncio.get_event_loop()

async def go():
    pool = await aioredis.create_pool(
        ('localhost', 6379),
        minsize=5, maxsize=10,
        loop=loop)
    with await pool as redis:    # high-level redis API instance
        await redis.set('my-key', 'value')
        print(await redis.get('my-key'))
    # graceful shutdown
    pool.close()
    await pool.wait_closed()

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

0.3.3 (2017-06-30)

FIX:

• Critical bug fixed in patched asyncio.Lock (see #256);

0.3.2 (2017-06-21)

NEW:

• Added zrevrangebylex command (see #201), cherry-picked from master;

• Add connection timeout (see #221), cherry-picked from master;

FIX:

• Fixed pool close warning (see #239 and #236), cherry-picked from master;

• Fixed asyncio Lock deadlock issue (see #231 and #241),

0.3.1 (2017-05-09)

FIX:

• Fix pubsub Receiver missing iter() method (see #203);

0.3.0 (2017-01-11)

NEW:

• Pub/Sub connection commands accept Channel instances (see #168);

• Implement new Pub/Sub MPSC (multi-producers, single-consumer) Queue – aioredis.pubsub.Receiver (see #176);

• Add aioredis.abc module providing abstract base classes defining interface for basic lib components; (see #176);

• Implement Geo commands support (see #177 and #179);

FIX:

• Minor tests fixes;

MISC:

• Update examples and docs to use async/await syntax also keeping yield from examples for history (see #173);

• Reflow Travis CI configuration; add Python 3.6 section (see #170);

• Add AppVeyor integration to run tests on Windows (see #180);

• Update multiple development requirements;

0.2.9 (2016-10-24)

NEW:

• Allow multiple keys in EXISTS command (see #156 and #157);

FIX:

• Close RedisPool when connection to Redis failed (see #136);

• Add simple INFO command argument validation (see #140);

• Remove invalid uses of next()

MISC:

• Update devel.rst docs; update Pub/Sub Channel docs (cross-refs);

• Update MANIFEST.in to include docs, examples and tests in source bundle;

0.2.8 (2016-07-22)

NEW:

• Add hmset_dict command (see #130);

• Add RedisConnection.address property;

• RedisPool minsize/maxsize must not be None;

• Implement close()/wait_closed()/closed interface for pool (see #128);

FIX:

• Add test for hstrlen;

• Test fixes

MISC:

• Enable Redis 3.2.0 on Travis;

• Add spell checking when building docs (see #132);

• Documentation updated;

0.2.7 (2016-05-27)

• create_pool() minsize default value changed to 1;

• Fixed cancellation of wait_closed (see #118);

• Fixed time() convertion 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;