Fault Tolerance¶

Introduction¶

go-chassis support fault-tolerance to resilient your service

the fault-tolerace related configurations is all in load_balancing.yaml, prefix is cse.loadbalance. set retryEnabled to true to enable it

retryEnabled

(optional, bool) Enable fault tolerance, default is false

retryOnSame

(optional, int) if failed, then retry on same instance, default is 0

retryOnNext

(optional, int) if failed, then call load balancing again to get next instance, default is 0

backoff.kind

(optional, string) backoff policy: [jittered|constant|zero] default is zero

zero: do not wait for any time。
constant: after each failed retry, wait for constant time. Use backoff.minMs to set the time。
jittered: time wil exponential growth after each retry, till this time reach to MaxMs. Use backoff.minMs to set the the first wait time

backoff.MinMs

(optional, int) minimum wait time between each retry, unit is ms, default is 0

backoff.MaxMs

(optional, int) maximum wait time between each retry, unit is ms, default is 0

edit load_balancing.yaml.

cse:
  loadbalance:
    retryEnabled: true
    retryOnNext: 2
    retryOnSame: 3
    backoff:
      kind: jittered
      MinMs: 200
      MaxMs: 400