Try testing number of external cache calls.

.github/workflows/phpunit-tests.yml

@@ -45,7 +45,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
+        php: [ '8.3' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0', '8.4', '9.0' ]
         tests-domain: [ 'example.org' ]
@@ -68,29 +68,6 @@ jobs:
             tests-domain: 'example.org'
             multisite: true
             memcached: true
-          # Include jobs with a port on the test domain for both single and multisite.
-          - os: ubuntu-latest
-            php: '8.4'
-            db-type: 'mysql'
-            db-version: '8.4'
-            tests-domain: 'example.org:8889'
-            multisite: false
-            memcached: false
-          - os: ubuntu-latest
-            php: '8.4'
-            db-type: 'mysql'
-            db-version: '8.4'
-            tests-domain: 'example.org:8889'
-            multisite: true
-            memcached: false
-          # Report test results to the Host Test Results.
-          - os: ubuntu-latest
-            db-type: 'mysql'
-            db-version: '8.4'
-            tests-domain: 'example.org'
-            multisite: false
-            memcached: false
-            report: true
 
         exclude:
           # MySQL 9.0+ will not work on PHP 7.2 & 7.3. See https://core.trac.wordpress.org/ticket/61218.
@@ -124,7 +101,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest ]
-        php: [ '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4' ]
+        php: [ '8.3' ]
         db-type: [ 'mariadb' ]
         db-version: [ '10.4', '10.6', '10.11', '11.2' ]
         multisite: [ false, true ]
@@ -154,74 +131,3 @@ jobs:
       phpunit-config: ${{ matrix.multisite && 'tests/phpunit/multisite.xml' || 'phpunit.xml.dist' }}
       report: ${{ matrix.report || false }}
 
-  #
-  # Runs specific individual test groups.
-  #
-  specific-test-groups:
-    name: ${{ matrix.phpunit-test-groups }}
-    uses: WordPress/wordpress-develop/.github/workflows/reusable-phpunit-tests-v3.yml@trunk
-    permissions:
-      contents: read
-    secrets: inherit
-    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
-    strategy:
-      fail-fast: false
-      matrix:
-        php: [ '7.2', '7.4', '8.0', '8.4' ]
-        db-type: [ 'mysql' ]
-        db-version: [ '8.4' ]
-        phpunit-test-groups: [ 'html-api-html5lib-tests' ]
-    with:
-      php: ${{ matrix.php }}
-      db-type: ${{ matrix.db-type }}
-      db-version: ${{ matrix.db-version }}
-      phpunit-test-groups: ${{ matrix.phpunit-test-groups }}
-
-  slack-notifications:
-    name: Slack Notifications
-    uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@trunk
-    permissions:
-      actions: read
-      contents: read
-    needs: [ test-with-mysql, test-with-mariadb, specific-test-groups ]
-    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
-    with:
-      calling_status: ${{ contains( needs.*.result, 'cancelled' ) && 'cancelled' || contains( needs.*.result, 'failure' ) && 'failure' || 'success' }}
-    secrets:
-      SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
-      SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
-      SLACK_GHA_FIXED_WEBHOOK: ${{ secrets.SLACK_GHA_FIXED_WEBHOOK }}
-      SLACK_GHA_FAILURE_WEBHOOK: ${{ secrets.SLACK_GHA_FAILURE_WEBHOOK }}
-
-  failed-workflow:
-    name: Failed workflow tasks
-    runs-on: ubuntu-latest
-    permissions:
-      actions: write
-    needs: [ slack-notifications ]
-    if: |
-      always() &&
-      github.repository == 'WordPress/wordpress-develop' &&
-      github.event_name != 'pull_request' &&
-      github.run_attempt < 2 &&
-      (
-        contains( needs.*.result, 'cancelled' ) ||
-        contains( needs.*.result, 'failure' )
-      )
-
-    steps:
-      - name: Dispatch workflow run
-        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
-        with:
-          retries: 2
-          retry-exempt-status-codes: 418
-          script: |
-            github.rest.actions.createWorkflowDispatch({
-              owner: context.repo.owner,
-              repo: context.repo.repo,
-              workflow_id: 'failed-workflow.yml',
-              ref: 'trunk',
-              inputs: {
-                run_id: '${{ github.run_id }}'
-              }
-            });