Add smarter document cache

[rubensworks]

Issue type:

• :heavy_plus_sign: Feature request

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Description:

Currently, we configure our document's cache (LRU) to have a size of 2048: https://github.com/comunica/comunica-feature-link-traversal/blob/master/engines/config-query-sparql-link-traversal/config/rdf-resolve-quad-pattern/actors/hypermedia.json#L13

This is quite arbitrary, and ignores things like file size and how well they apply to query results.

We should introduce better caching techniques dedicated to link traversal.

Example query where this cache is relevant: https://comunica.github.io/comunica-feature-link-traversal-web-clients/builds/solid-default/#datasources=https%3A%2F%2Fdrive.verborgh.org%2Fmovies%2F&query=PREFIX%20schema%3A%20%3Chttps%3A%2F%2Fschema.org%2F%3E%0ASELECT%20*%20WHERE%20%7B%0A%20%20%3Fmovie%20a%20schema%3AMovie.%0A%20%20%3Faction%20a%20schema%3AWatchAction%3B%0A%20%20%20%20%20%20%20%20%20%20schema%3Aobject%20%3Fmovie.%0A%7D&solidIdp=https%3A%2F%2Fdrive.verborgh.org%2F

[github-actions[bot]]

Thanks for the suggestion!