Improve cquery speed by caching Skyframe calls

Calling Skyframe adds a performance cost even when hitting the Skyframe
cache. This change adds a local cache for retrieving configurations.

Experiments show about a 7% reduction in query time on `--output=graph` (see code comments).

Followup to
https://github.com/bazelbuild/bazel/pull/12248/files/939e4cadf7a49a316017d207bd4504ac0c10373c#r503552367.

Closes #12309.

Change-Id: I5dad55b3bb3b3e245a90f4d75e740c63754ff61c
PiperOrigin-RevId: 338255283
6 files changed
tree: 9e6894622c7e636c714ce6aa28ee138847e65828
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .bazelrc
  9. .gitattributes
  10. .gitignore
  11. AUTHORS
  12. BUILD
  13. CHANGELOG.md
  14. CODEBASE.md
  15. CODEOWNERS
  16. combine_distfiles.py
  17. combine_distfiles_to_tar.sh
  18. compile.sh
  19. CONTRIBUTING.md
  20. CONTRIBUTORS
  21. distdir.bzl
  22. ISSUE_TEMPLATE.md
  23. LICENSE
  24. README.md
  25. WORKSPACE
README.md

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