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epriestley 1f3fcce6fe Provide a cached class map query for making key-based class lookups more efficient
Summary:
Ref T11954. Depends on D16993. We have a couple of "look up the class for this key" queries which are costly enough to show up on a profile.

These aren't huge wins, but they're pretty easy. We currently do this like this:

```
$class_map = load_every_subclass();
return idx($class_map, $key);
```

However, we don't need to load EVERY subclass if we're only looking for, say, the Conduit method subclass which implements `user.whoami`. This allows us to cache that map and find the right class efficiently.

This cache is self-validating and completely safe even in development.

Test Plan:
  - Used `curl` to make queries to `user.whoami`, verified that content was identical before and after the change.
  - Used `ab -n100` to roughly measure 99th percentile time, which dropped from 74ms to 65ms. This is a small improvement (13% in the best case, here) but it benefits every Conduit method call.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T11954

Differential Revision: https://secure.phabricator.com/D16994
2016-12-06 08:34:29 -08:00
bin Add a skeleton for Calendar notifications 2016-11-01 10:41:15 -07:00
conf Support "ssl.chain" in Aphlict configuration 2016-04-14 10:41:21 -07:00
externals Backport fix from php-mime-mail-parser to fix attachment parsing 2016-09-21 15:04:20 -07:00
resources Remove the Persona login method 2016-12-05 15:57:15 -08:00
scripts Use HTTPS, not HTTP, in install scripts 2016-11-29 12:11:04 -08:00
src Provide a cached class map query for making key-based class lookups more efficient 2016-12-06 08:34:29 -08:00
support Allow bin/aphlict to start without a valid database connection 2016-11-13 16:43:23 -08:00
webroot Remove the Persona login method 2016-12-05 15:57:15 -08:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Begin adding test coverage to GitHub Events API parsers 2016-03-09 09:30:07 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig Fix text lint issues 2015-02-12 07:00:13 +11:00
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE Fix text lint issues 2015-02-12 07:00:13 +11:00
NOTICE Update Phabricator NOTICE file to reflect modern legal circumstances 2014-06-25 13:42:13 -07:00
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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