Optimize startup time: cache configuration

Question

Optimize startup time: cache configuration

dsyer opened this issue 8 years ago · comments

The Pet Clinic depends on EhCache, but it doesn't even use it unless the "production" profile is enabled. And yet it costs a couple hundred ms apparently (see benchmarks at https://github.com/dsyer/spring-boot-startup-bench). This might be just a special case of too much condition processing on startup, but I did notice that all cache types are configured in CacheConfigurationImportSelector, even if they are switched off by condition processing, and maybe this is unnecessary.

Stéphane Nicoll · Answer 1 · Wed Dec 07 2016 20:34:28 GMT+0800 (China Standard Time)

I noticed that too and we should revisit the condition to back-off sooner indeed. If you have an app with nothing particular on the classpath, the cache conditions always shows up which is not nice at all.

Phil Webb · Answer 2 · Sat Jan 26 2019 00:56:30 GMT+0800 (China Standard Time)

@dsyer I know you've been looking at pet clinic again recently. Did this issue end up being a quirk of the report (#13509) or was it legit? What are the steps we need to follow to replicate?

Dave Syer · Answer 3 · Sun Jan 27 2019 16:54:51 GMT+0800 (China Standard Time)

Some analysis: spring-attic/spring-init#5. The benchmark code is there as well I think (in the petclinic sample inside that project). See also this Spring Framework issue: spring-projects/spring-framework#22175.