breadis

breadis

A proxy for redis cluster which automatically handles command redirection and failover detection

To the client, acts just like a redis server. No changes necessary for any redis client to communicate with it.

Usage

Compile with

go build

See command-line options with

./breadis --help

Load command-line options from config file with

./breadis --config <file>

See example config file with

./breadis --example

Use case

breadis acts as a simple proxy to an entire redis cluster, acting exactly the same as a normal single redis instance (so any existing redis driver can already talk to breadis).

This might seem a bit silly, since you could just use a cluster-aware driver in your application to interact with the redis cluster. But this has two downsides:

• You have to know you're interacting with a redis cluster in the first place, which may not always be the case. For instance, if in a dev environment an application commmunicates with a single redis on localhost:6379, but in production there is a cluster on multiple other boxes, that's something the application has to differentiate. Instead, the dev environment could keep using a single local redis, but in production the application server could have breadis listening on port 6379, meaning the application wouldn't have to know the difference.

• The redis cluster handling isn't trivial, and works best when there is a persistant process managing it. This may not be possible in stateless, request based languages (e.g. PHP) or if you're executing a bunch of one-off scripts which use redis cluster. For these cases having a breadis instance handle the hard parts and just having the application hit it instead of doing the hard parts itself.