forked from https://github.com/symfony/symfony
226b36e99a
This PR was squashed before being merged into the 4.3-dev branch (closes #30964).
Discussion
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[HttpKernel] Add a "short" trace header format, make header configurable
| Q | A
| ------------- | ---
| Branch? | master
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets |
| License | MIT
| Doc PR | symfony/symfony-docs#11340
This pull requests adds the first usage of `array_key_first` to the Symfony code base. Additionally, it makes it possible to configure the `HttpCache` to also add a "trace" header in production.
The `HttpCache` is a convenient, low-barrier yet performant way of accelerating the application. By having the "trace" information returned as a header in production as well, you can write it to server log files. For example, with Apache you can use `%{X-Symfony-Cache}o` in the `LogFormat` directive to log response headers.
With the information in the log files, you can easily process it from logfile processing/system metrics tools to find out about cache performance, efficiency and the URLs that might need extra cache tweaking.
<img width="1040" alt="Bildschirmfoto 2019-04-07 um 11 43 23" src="https://user-images.githubusercontent.com/1202333/55681763-6e90e980-592a-11e9-900f-e096350531c2.png">
The "short" format will only output information for the main request to avoid leaking internal URLs for ESI subrequests. I also chose a concise format like `stale/valid/store` because that's much easier to parse out of logfiles (no whitespace, no need for quotes etc.).
If you're not comfortable with having `Symfony` in the header name that way, the header name can be changed through a configuration setting as well.
#FOSSHackathon
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src/Symfony | ||
.appveyor.yml | ||
.editorconfig | ||
.gitignore | ||
.php_cs.dist | ||
.travis.yml | ||
CHANGELOG-4.0.md | ||
CHANGELOG-4.1.md | ||
CHANGELOG-4.2.md | ||
CODE_OF_CONDUCT.md | ||
composer.json | ||
CONTRIBUTING.md | ||
CONTRIBUTORS.md | ||
LICENSE | ||
link | ||
phpunit | ||
phpunit.xml.dist | ||
README.md | ||
UPGRADE-4.0.md | ||
UPGRADE-4.1.md | ||
UPGRADE-4.2.md | ||
UPGRADE-4.3.md | ||
UPGRADE-5.0.md |
Symfony is a PHP framework for web applications and a set of reusable PHP components. Symfony is used by thousands of web applications (including BlaBlaCar.com and Spotify.com) and most of the popular PHP projects (including Drupal and Magento).
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