iftechfoundation / ifcomp

64%

master: 66%

LAST BUILD ON BRANCH main

branch: SELECT

CHANGE BRANCH

x

• No branch selected
• 2019-art
• 245-standalone-server-static-resources
• 250mb
• Hide-premature-history-198
• add-adrift-online
• add-parchment-for-tads
• add-paypal
• add-phase-changing-script
• add-test-data
• add-travis-ci-config
• adrift
• author-voting
• ballot
• ballot-csv
• ballot-image-dimensions
• bootstrap5
• cache-web-cover-geometry
• cleansheet
• cleanup
• co-author
• co-author-new
• colossal-fund
• combine-informs
• comp25tweaks
• comp26tweaks
• content-warning-hidden-microdata
• cookie-path
• cover-artist
• cover-caching
• cw250
• dark-mode
• dev
• develop
• devtest
• display-new-fields
• doc-shipping-to-ifdb-and-ifarchive
• docker
• docker-clean
• docker-new
• enable_transcripts_index
• entrant-email-lists
• entry-questions
• entryvote
• escape-titles
• extra-content
• feedback
• filter-filter
• filter-fixes
• filter-qualified
• fix-blurry-covers
• fix-chained-admin-paths
• fix-ci-apostrophe
• fix-cover-art-cache
• fix-entry-login-redirection
• fix-populate-ifdb-user-agent
• fix-tidyall
• fix-travis-ci
• fix-zip-of-zip-subdirectories
• fund-stuff
• genai-update
• hide-cw
• hugo
• ifcomp-2017
• improved-processing-test
• international-prizes
• kdev
• license
• limit-author-votes
• linked-covers
• main
• manual-platforms
• master
• misc
• mismerge
• move-from-travis-ci-to-github-actions
• move-tidyall-test
• new-logo
• new-scheme
• no-cache
• no-steam-keys
• notification
• parchment
• perl-5.34
• platform-fix
• premerge
• prizegen
• quiet-tidyall
• quixe
• quixe-transcripts
• quotes
• random-default
• registration
• remove-dead-code
• remove-legacy-encrypt
• reorganize-docker
• reorganize-docker-WIP
• rule-update
• safer-transcript-code
• selenium
• simplify-recording
• single_alt_scotch
• sorting
• standardize-zip-slugs
• test-zip-of-zips-in-docker
• tidy-version
• transcript-popup
• transcript-visibility
• uk-list
• update-perl-in-travis-ci
• update-platform-list
• update-schema-from-production
• update2025
• update2026
• upgrade-perl
• userid-cookie
• votecsv
• web-images
• zip-of-zips

Build # 35713891418

Build Type

push

github

Committed by mjmusante

Commit Message

Use immutable hashed urls for `/play/#/cover` and `/play/#/full_cover`

Before this change, ballot image URLs would look like:

* `/play/100/cover`
* `/play/100/full_cover`

And they would have `Cache-Control: max-age=86400`, 24 hour caching. If an author tried to change their cover image, it would not take effect for end users for up to 24 hours.

Now, ballot image URLs include the hash of their content:

* `/play/100/cover/6f3258d40362b2c5`
* `/play/100/full_cover/184051209a39ecc8`

These URLs have `Cache-Control: public, max-age=31536000, immutable`, i.e. far-future immutable caching.

The hash is stored in `geometry.txt` for the web cover, and in `hash.txt` for the full cover.

The ballot reads the stored hashes to generate HTML like this:

```
<a href="/play/100/full_cover/184051209a39ecc8">
  <img src="/play/100/cover/6f3258d40362b2c5">
</a>
```

When the author uploads a new image, the ballot HTML (which is never cached) instantly uses new URLs for the image, making the latest cover art immediately visible to judges. Judges never need to redownload images that are already cached.

Coverage Stats

1460 of 2273 relevant lines covered (64.23%)

43.89 hits per line