internal/postgres: repeat search when grouping

When grouping results, search a second time with a larger limit if the
first doesn't return enough results.

Also, remove the Limit search option; it is an implementation detail
that should be determined by DB.Search.

I tested this against 176 distinct queries obtained from the logs over
a 1-hour period, with max results = 10. Although it was somewhat
slower than without grouping, the 99%ile was still under 1 second.

For golang/go#47320

Change-Id: Ie09d6b83bc270a7113abd74b03daf26fa6054b0f
Reviewed-on: https://go-review.googlesource.com/c/pkgsite/+/336950
Trust: Jonathan Amsterdam <jba@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Jamal Carvalho <jamal@golang.org>
Reviewed-by: Julie Qiu <julie@golang.org>
TryBot-Result: kokoro <noreply+kokoro@google.com>
1 file changed
tree: 7777917125ccdf58762fae723091f9358687ded9
  1. cmd/
  2. devtools/
  3. doc/
  4. internal/
  5. migrations/
  6. static/
  7. tests/
  8. third_party/
  9. .dockerignore
  10. .eslintignore
  11. .eslintrc.yaml
  12. .gitignore
  13. .prettierignore
  14. .prettierrc.yaml
  15. .stylelintignore
  16. .stylelintrc.yaml
  17. all.bash
  18. cloudbuild.yaml
  19. CONTRIBUTING.md
  20. go.mod
  21. go.sum
  22. jest.config.js
  23. LICENSE
  24. package-lock.json
  25. package.json
  26. PATENTS
  27. README.md
  28. tsconfig.json
README.md

Pkg.go.dev

Go Reference

A site for discovering Go packages

Pkg.go.dev is a website for discovering and evaluating Go packages and modules.

You can check it out at https://pkg.go.dev.

Issues

If you want to report a bug or have a feature suggestion, please first check the known issues to see if your issue is already being discussed. If an issue does not already exist, feel free to file an issue.

For answers to frequently asked questions, see go.dev/about.

You can also chat with us on the #pkgsite Slack channel on the Gophers Slack.

Contributing

We would love your help!

Our canonical Git repository is located at go.googlesource.com/pkgsite. There is a mirror of the repository at github.com/golang/pkgsite.

To contribute, please read our contributing guide.

License

Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file.

Links