more details in readme.md

[q3769]

I understand I can try this out by myself, but in the readme.md document, can you please clarify how exactly this works in concert with Spring Boot? E.g. when you say:

coffee-boots.cache.spec.myCache=maximumSize=100000,expireAfterWrite=1m

Is that "in addition to" spring boot's:

spring.cache.type=caffeine
spring.cache.cache-names=myCache,cache2,cache3
spring.cache.caffeine.spec=maximumSize=500,expireAfterAccess=600s

Or, does the coffee-boots.* properties completely replace spring.cache.* properties?

I hope it is in addition and not replacement. i.e. If I use "cache2" or "cache3" in my class annotation, I get the default/global spring configuration values (500 maxSize in this case); if I use "myCache" in my annotation, I get coffee-boot values (10000 maxSize). If it doesn't work that way, I'd like to request that it does.

Thanks!

[garretwilson]

Yes, a little more information in the readme would be helpful, especially to those who have never added any Spring cache before, and need to know is absolutely needed.

[garretwilson]

Some notes from my own experiments just now:

• If using Spring Boot and have not defined any specific caching beans, spring.cache.type=caffeine may not necessarily be needed, with or without Coffee Boots; see Spring Boot § 11.1.1. Supported Cache Providers and Spring Boot Caffeine.
• Coffee Boot worked for me simply by adding the dependency and using something along the lines of coffee-boots.cache.spec.myCache=maximumSize=100000,expireAfterWrite=1m; no additional spring.cache.* configuration was needed.
• In my experiments I could not get Coffee Boot to fall back to the spring.cache.* properties (e.g. if a foo cache was defined with Coffee Boots but a bar cache was defined using the Spring properties); it would seem that the coffee-boots.* settings completely replace the spring.cache.* properties, and the latter are ignored if the former are present. (I think the readme alludes to this when it says "… just remove all the properties matching coffee-boots.* prefix" in order to switch back to Spring cache settings.

I agree that the documentation needs to be clarified and expanded a little.

[TheGeb]

The readme is also incorrect on this point:
"Use coffee-boots.cache.default-spec to define "basic" cache configuration with common key-value pairs to be reused by all other custom cache configurations. This allows simplifying custom configurations if necessary."

The code actually searches for coffee-boots.cache.basic-spec, so specifying default-spec will have no effect