php / php/php-src

Ability to disable tmp caching of phar contents

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#13,055 5 comments 0 reactions 0 assignees View on GitHub

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Extension: phar Feature Status: Needs Triage
Dominant language
C
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Avg merge
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Description

Description

It's not clear to me what the point of caching phar contents is. In a world where opcache is used, it shouldn't be necessary to cache the phar contents anyway, except perhaps the occasional data file.

In addition, since different threads / processes don't share phar caches, /tmp can get very crowded with lots of files caching near-identical data.

I maintain a long-running application in which autoload time is not a concern, but the hogging of tmp space is a problem for my users. There doesn't seem to be a way to stop ext-phar from caching things read from phars.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by tracing ext-phar's phar-content caching and its /tmp usage, with opcache context in mind. Verify a way to disable that caching without affecting required phar reads; the issue names no files or tests, so locating the relevant entry points is part of the work.

Written by the indexing model from the issue text.

Assessment

Tech stack
c, php
Domain
backend, performance
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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