[infinispan-dev] Data Container Changes Part 1

[Radim Vansa]

Perfect! This would reduce the only limitation of dist/replicated caches 
in 2LC, while I am convinced that these have much better performance 
(there have been some changes recently, so I have to re-run the perf tests).

So, how should that feature be exposed to users?

1) Annotating the value class with @NonEvictable or @Evictable(false)
- What if the user can't change the class definition? That would require 
us to provide alternative way as well (listing classes in configuration)
- Should we set this fixed for a value class? Inheritance?
- Should we support also @NonEvictable keys?

2) Adding Flag.NON_EVICTABLE to the write
- Flags are a bit controversial, we shouldn't add more user-facing flags
- We need a Param for functional commands as well

3) Other ways?

Should we create another type of CacheEntry (-1), add a flag to 
Metadata, or something else?

Radim


On 12/20/2016 03:33 PM, William Burns wrote:
> Yes, definitely!
>
> I made sure to check when I added Caffeine [1]
>
> I was thinking we could add that later if we really need the feature.
>
>  - Will
>
> [1] 
> https://github.com/ben-manes/caffeine/blob/master/caffeine/src/main/java/com/github/benmanes/caffeine/cache/Caffeine.java#L347
>
> On Tue, Dec 20, 2016 at 4:16 AM Radim Vansa <rvansa at redhat.com 
> <mailto:rvansa at redhat.com>> wrote:
>
>     Regarding another use of Weighter in Caffeine: would it be possible to
>     guarantee that an object with weight 0 (or negative one) is never
>     evicted?
>
>     R.
>
>     On 12/19/2016 10:10 PM, William Burns wrote:
>     > Check out some of the new changes to the Data Container in
>     Infinispan
>     > 9.0. Beta 1 [1].  Part 2 will be probably after Holiday break.
>     >
>     > [1]
>     http://blog.infinispan.org/2016/12/data-container-changes-part-1.html
>     >
>     >
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>     --
>     Radim Vansa <rvansa at redhat.com <mailto:rvansa at redhat.com>>
>     JBoss Performance Team
>
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-- 
Radim Vansa <rvansa at redhat.com>
JBoss Performance Team