agreed. We need a health check for redis, just like upstream health check. Thanks, Ming Wen, Apache APISIX PMC Chair Twitter: _WenMing
Jan Li <jan...@airwallex.com> 于2020年11月16日周一 下午3:50写道： > Hi community, > > Currently APISIX uses Redis to do cluster-level rate limit, it calls > Redis for every request to check whether the rate control is broken. > > Problem is that Redis becomes an important dependency in the critical > path of request processing. So if Redis is under maintenance, every request > will have to wait for the Redis connection to timeout. The timeout will > slow down request processing of APISIX and might cause other issues due to > request processing are actually pending. > > Proposal: > > 1. Start a backend process to check the availability of Redis. > 2. If Redis is unavailable, all operations on Redis will fail fast. > 3. If Redis is back to normal, all operations on Redis will hit Redis > again. > 4. The check health interval can be configured in config.yaml. >
