Should say -- Can anyone confirm if it's right *still*, since the article is 10 years old :)
On Fri, Mar 5, 2021 at 10:36 AM Stephen Lewis Bianamara < stephen.bianam...@gmail.com> wrote: > Hi SOLR Community, > > Just following up here with an update. I found this article which goes > into depth on the field cache though stops short of discussing how it > handles eviction. Can anyone confirm if this info is right? > > https://lucidworks.com/post/scaling-lucene-and-solr/ > > > Also, can anyone speak to how the field cache handles evictions? > > Best, > Stephen > > On Wed, Feb 24, 2021 at 4:43 PM Stephen Lewis Bianamara < > stephen.bianam...@gmail.com> wrote: > >> Hi SOLR Community, >> >> I've been trying to understand how the field cache in SOLR manages >> its evictions, and it is not easily readable from the code or documentation >> the simple question of when and how something gets evicted from the field >> cache. This cache also doesn't show hit ratio, total hits, eviction ratio, >> total evictions, etc... in the web UI. >> >> For example: I've observed that if I write one document and trigger a >> query with a sort on the field, it will generate two entries in the field >> cache. Then if I repush the document, the entries get removed, but will >> otherwise stay there seemingly forever. If my query matches 2 docs, same >> thing but with 4 entries (2 each). Then, if I rewrite one of the docs, >> those two entries go away but not the two from the first one. This >> obviously implies that there are implications to write throughput >> performance based on this cache, so the fact that it is not configurable by >> the user and doesn't have very clear documentation is a bit worrisome. >> >> Can someone here help out and explain how the filter cache handles >> evictions, or perhaps send me the documentation if I missed it? >> >> >> Thanks! >> Stephen >> >
