asyncio-redis-ha 0.1.1

Features

• Sentinel support ontop of asyncio-redis:

  • role

  • sentinels

  • slaves

  • get_master_addr_by_name

• Extended Redis support (versions 3.x)

  • role

• Mostly tested

  • all tests from asyncio-redis are green

  • new functionality covered and guaranteed to run in same conditions

  • failover scenarios tested manually

Dependencies

Redis cluster with Sentinel solution requires Redis 3.x

This package uses and heavily depends on asyncio-redis, because of the dependencies on package internals (due to required changes to support sentinel operations) currently requirement fixed at version 0.14.3

I will manually update this dependency after ensuring that internals are compatible.

Roadmap

• implement pool reinitialization on master connection loss

• add repeat/backoff wrapper as part of the package (coroutine or decorator)

• provide automated testing for failover scenarios

• implement preemptive connection reconfiguration (instant failover detection based on channel events from Sentinel daemon)

• hiredis support

User Guide

Usage is the very same as for asyncio-redis package Pool object, except for initialization of an entry point

Initialize a ConnectionManager

c = yield from ConnectionManager.create(
        cluster_name='mymaster',
        sentinels=[
            ('172.17.0.4', 26379),
            ('172.17.0.6', 26379),
            ('172.17.0.7', 26379)
        ],
        poolsize=5
)
#  start using just like asyncio-redis
yield from c.set('key', 'value')