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66c1281301
Cleaning out a lot of old junk from the code, and one thing lead to another...
* Build is improved, now constructing docker images with 'jib'. Clean build went from 3 minutes to 50 seconds.
* The ProcessService's spawning is smarter. Will now just spawn a java process instead of relying on the application plugin's generated outputs.
* Project is migrated to GraalVM
* gRPC clients are re-written with a neat fluent/functional style. e.g.
```channelPool.call(grpcStub::method)
.async(executor) // <-- optional
.run(argument);
```
This change is primarily to allow handling ManagedChannel errors, but it turned out to be a pretty clean API overall.
* For now the project is all in on zookeeper
* Service discovery is now based on APIs and not services. Theoretically means we could ship the same code either a monolith or a service mesh.
* To this end, began modularizing a few of the APIs so that they aren't strongly "living" in a service. WIP!
Missing is documentation and testing, and some more breaking apart of code.
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The index service is a partitioned service that knows which document contains which keywords.
It is the service that most directly executes a search query. It does this by evaluating a low-level query, and then using the index to find the documents that match the query, finally ranking the results and picking the best matches.
Central Classes
- IndexService is the REST entry point that the internal API talks to.
- IndexQueryService executes queries.
- SearchIndex owns the state of the index and helps with building a query strategy from parameters.
- IndexResultValuator determines the best results.
See Also
The index service relies heavily on the primitives in features-index: