0307c55f9f
To avoid having to either hard-code or manually configure service addresses (possibly several dozen), and to reduce the project's dependency on docker to deal with routing and discovery, the option to use [Zookeeper](https://zookeeper.apache.org/) to manage services and discovery has been added. A service registry interface was added, with a Zookeeper implementation and a basic implementation that only works on docker and hard-codes everything. The last remaining REST service, the assistant-service, has been migrated to gRPC. This also proved a good time to clear out primordial technical debt from the root of the codebase. The 'service-client' library has been taken behind the barn and given a last farewell. It's replaced by a small library for managing gRPC channels. Since it's no longer used by anything, RxJava has been removed as a dependency from the project. Although the current state seems reasonably stable, this is a work-in-progress commit. |
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Domain Link Database
The domain link database contains information about links between domains. It is a static in-memory database loaded from a binary file.
Document Database
The document database contains information about links, such as their ID, their URL, their title, their description, and so forth.
The document database is a sqlite file. The reason this information is not in the MariaDB database is that this would make updates to this information take effect in production immediately, even before the information was searchable.
See Also
These databases are constructed by the loading-process, and consumed by the index-service.