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  1. Moodle
  2. MDL-43524

Drop problematic global text caching

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    • 4
    • BACKEND Sprint 9

    Description

      The trouble is that there is a bazillions of settings/options/conditions that may affect text filter outcomes - it is technically not possible to do a high performance caching at this level.

      Dropping the global text caching will fix multitude of issues at the same time:

      • JS handling
      • use of PAGE and OUTPUT
      • use of any other globals
      • easier resetting of local filter caches
      • etc.

      There are already static caches in most filters, which means this should not cause perf regressions on large sites - they were supposed to turn off this ugly feature already...

      The next step is to migrate individual filter caches to MUC (unless the perf overhead of MUC

      Attachments

        Issue Links

          has a non-specific relationship to

          Sub-task - Issues are sometimes broken into multiple sub-tasks. MDL-34347 Develop filtered text caching

          • Critical - Crashes server, loss of data, severe memory leak
          • Closed
          has been marked as being related by

          Bug - A problem which impairs or prevents Moodle from functioning correctly. MDL-44366 filter_glossary has the potential to be slow on large sites

          • Blocker - Blocks development and/or testing, prevents Moodle from running (applicable to bugs only)
          • Closed

          Improvement - An enhancement to an existing Moodle feature. MDL-44367 Improve filter_data performance on large sites

          • Critical - Crashes server, loss of data, severe memory leak
          • Closed

          Improvement - An enhancement to an existing Moodle feature. MDL-44368 filter_activitynames can be improved after dropping of global text cache

          • Major - Major loss of function, incorrect output
          • Closed
          will help resolve

          Improvement - An enhancement to an existing Moodle feature. MDL-41483 Convert format_text() caching to use MUC

          • Minor - Minor loss of function where workaround is possible
          • Closed

          Activity

            People

              skodak Petr Skoda
              skodak Petr Skoda
              Andrew Lyons Andrew Lyons
              Eloy Lafuente (stronk7) Eloy Lafuente (stronk7)
              Sam Hemelryk Sam Hemelryk
              David Woloszyn, Huong Nguyen, Jake Dallimore, Meirza, Michael Hawkins, Raquel Ortega, Safat Shahin, Stevani Andolo
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              9 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:
                12/May/14