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News posted by antirez

Client side highly available Redis Cluster, Dynamo-style.

antirez 1865 days ago.
I'm pretty surprised no one tried to write a wrapper for redis-rb or other clients implementing a Dynamo-style system on top of Redis primitives.

Basically something like that:

1) You have a list of N Redis nodes.
2) On write, use consistent hashing and write the same thing to M nodes (M configurable).
3) On reads, read from M nodes and pick the most common reply to return to the client. For all the non-matching replies, use DUMP / RESTORE in Redis 2.6 to update the value of nodes that are in the minority.

Designing Redis replication partial resync

antirez 1866 days ago.
In this busy days I had the idea to focus on a single, non-huge, self contained project for some time, that could allow me to work focused as much as hours as possible, and could provide a significant advantage to the Redis community.

It turns out, the best bet was partial replication resync. An always wanted feature that consists in the ability to a slave to resynchronize to a master without the need of a full resync (and RDB dump creation on the master side) if the replication link was interrupted for a short time, because of a timeout, or a network issue, or similar transient issue.

Why Github pull requests lack support for labels?

antirez 1870 days ago.
I love Github issues, it is one of the awesome things at Github IMHO: as simple as possible but actually under the hood pretty full featured.

However one of the things I love more is labels. It is a truly powerful thing to organize issues in a project-specific way. Unfortunately if an issue is a pull request, no labels can be attached. I wonder why.

Also I would love the ability to merge against multiple branches instead of the taget one, directly from the web UI.

On complexity and failure

antirez 1872 days ago.
From a comment on Hacker News:

(link: http://news.ycombinator.com/item?id=4705387)

--- quoted comment ---
Full disclosure: I work for an AWS competitor.
While none of the specific AWS systemic failures may themselves be foreseeable, it is not true that issues of this nature cannot be anticipated: the architecture of their system (and in particular, their insistence on network storage for local data) allows for cascading failure modes in which single failures blossom to systemic ones. AWS is not the only entity to have made this mistake with respect to network storage in the cloud; I, too, was fooled.[1]

Redis 2.6.1 is out

antirez 1873 days ago.
Achievement unlocked: releasing a Redis version the same day your daughter was born ;-)

But that was a bad issue as there was a bug preventing compilation on pretty old Linux systems that are still pretty widespread (RHLE5 & similar).

Redis 2.6.1 fixes just that issue and is available as usually at http://redis.io as a tar.gz or at github/antirez/redis as a "2.6.1" tag.
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