Very cool! "The Life Cycle of the IndexSearcher" would also be a great diagram. The whole dance that happens during a commit is hard to explain. Also, it would help show why garbage collection can act up around commits.
Lance On Sun, Apr 10, 2011 at 2:05 AM, Jan Høydahl <jan....@cominvent.com> wrote: >> Looks really good, but two bits that i think might confuse people are >> the implications that a "Query Parser" then invokes a series of search >> components; and that "analysis" (and the pieces of an analyzer chain) >> are what to lookups in the underlying lucene index. >> >> the first might just be the ambiguity of "Query" .. using the term >> "request parser" might make more sense, in comparison to the "update >> parsing" from the other side of hte diagram. > > Thanks for commenting. > > Yea, the purpose is more to show a conceptual rather than actual relation > between the different components, focusing on the flow. A 100% technical > correct diagram would be too complex for beginners to comprehend, > although it could certainly be useful for developers. > > I've removed the arrow between QueryParser and search components to clarify. > The boxes first and foremost show that query parsing and response writers > are within the realm of search request handler. > >> the analysis piece is a little harder to fix cleanly. you really want the >> end of the analysis chain to feed back up to the searh components, and >> then show it (most of hte search components really) talking to the Lucene >> index. > > Yea, I know. Showing how Faceting communicate with the main index and > spellchecker with its spellchecker index could also be useful, but I think > that would be for another more detailed diagram. > > I felt it was more important for beginners to realize visually that > analysis happens both at index and search time, and that the analyzers > align 1:1. At this stage in the digram I often explain the importance > of matching up the analysis on both sides to get a match in the index. > > -- > Jan Høydahl, search solution architect > Cominvent AS - www.cominvent.com > > -- Lance Norskog goks...@gmail.com
