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ci(prod): invalidate CloudFront on deploy #441

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erinxocon merged 1 commit into from
Nov 3, 2026
Merged

ci(prod): invalidate CloudFront on deploy #441

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26 changes: 24 additions & 2 deletions .github/workflows/deploy-prod.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -52,8 +52,30 @@ jobs:
AWS_DEFAULT_REGION: ${{ secrets.STAGING_AWS_REGION }}

- name: Deploy
run: aws s3 sync ./dist s3://${{ secrets.PRODUCTION_AWS_S3_BUCKET }}/tech-docs --delete
# Order matters: live pages must never reference an asset that has not
# been uploaded yet, or one that has already been deleted.
run: |
# Hashed filenames change with their content, so size is enough to skip existing files.
aws s3 sync ./dist/_astro "$S3_PREFIX/_astro" --size-only
aws s3 sync ./dist "$S3_PREFIX" --exclude "_astro/*" --delete

# CloudFront caches rewritten URIs (/x/index.html), which these wildcards also match.
# Read top-level folders from the build so new sections are never missed.
# _astro is skipped because its filenames change with their content.
mapfile -t DIR_PATHS < <(cd dist && find . -mindepth 1 -maxdepth 1 -type d ! -name _astro ! -name '.*' -printf '/tech-docs/%P*\n')
INVALIDATION_ID=$(aws cloudfront create-invalidation \
--distribution-id "$DISTRIBUTION_ID" \
--paths "/tech-docs" "/tech-docs/" "/tech-docs/index.html" \
"${DIR_PATHS[@]}" \
"/tech-docs/sitemap-*" "/tech-docs/favicon.png" \
--query Invalidation.Id --output text)
aws cloudfront wait invalidation-completed \
--distribution-id "$DISTRIBUTION_ID" --id "$INVALIDATION_ID"

aws s3 sync ./dist/_astro "$S3_PREFIX/_astro" --size-only --delete
env:
S3_PREFIX: s3://${{ secrets.PRODUCTION_AWS_S3_BUCKET }}/tech-docs
DISTRIBUTION_ID: ${{ secrets.PRODUCTION_AWS_CLOUDFRONT_DISTRIBUTION_ID }}
AWS_ACCESS_KEY_ID: ${{ secrets.PRODUCTION_AWS_ACCESS_KEY_ID }}
AWS_SECRET_ACCESS_KEY: ${{ secrets.PRODUCTION_AWS_SECRET_ACCESS_KEY }}
AWS_DEFAULT_REGION: ${{ secrets.PRODUCTION_AWS_REGION }}
AWS_DEFAULT_REGION: ${{ secrets.PRODUCTION_AWS_REGION }}
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