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Test Cassandra workflow (ekzhu/datasketch)

The Test Cassandra workflow from ekzhu/datasketch, explained and optimized by Latchkey.

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Source: ekzhu/datasketch.github/workflows/test-cassandra.ymlLicense MITView source

What it does

This is the Test Cassandra workflow from the ekzhu/datasketch repository, a real project running GitHub Actions. It is shown here with attribution under its MIT license.

Below, Latchkey shows a faster, safer version produced by its optimization engine.

The workflow

workflow (.yml)
name: Test Cassandra

on:
  push:
    branches: [master]
  pull_request:
    branches: [master]

permissions:
  contents: read

jobs:
  build:
    runs-on: "ubuntu-latest"
    strategy:
      matrix:
        python-version: ["3.10"]
    services:
      cassandra:
        image: cassandra
        ports:
          - 9042:9042
        options: --health-cmd "cqlsh --debug" --health-interval 10s --health-retries 15 --health-start-period 30s
    steps:
      - uses: actions/checkout@v7
      - name: Install uv and setup python ${{ matrix.python-version }}
        uses: astral-sh/setup-uv@v7
        with:
          activate-environment: true
          python-version: ${{ matrix.python-version }}
          enable-cache: true
      - name: Install dependencies
        run: |
          uv pip install flake8 pytest
      - name: Install package
        run: |
          # Disable Cassandra optional extensions (faster testing).
          export CASS_DRIVER_NO_EXTENSIONS=1
          uv pip install -e ."[test,aio,bloom]"
          uv pip list
      - name: Test with pytest
        run: |
          export DO_TEST_CASSANDRA=true
          uv run pytest
      - name: Minimize uv cache
        run: uv cache prune --ci

The same workflow, on Latchkey

Removes redundant runs and caps runaway jobs. Added and changed lines are highlighted.

name: Test Cassandra
 
on:
  push:
    branches: [master]
  pull_request:
    branches: [master]
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  build:
    timeout-minutes: 30
    runs-on: "ubuntu-latest"
    strategy:
      matrix:
        python-version: ["3.10"]
    services:
      cassandra:
        image: cassandra
        ports:
          - 9042:9042
        options: --health-cmd "cqlsh --debug" --health-interval 10s --health-retries 15 --health-start-period 30s
    steps:
      - uses: actions/checkout@v7
      - name: Install uv and setup python ${{ matrix.python-version }}
        uses: astral-sh/setup-uv@v7
        with:
          activate-environment: true
          python-version: ${{ matrix.python-version }}
          enable-cache: true
      - name: Install dependencies
        run: |
          uv pip install flake8 pytest
      - name: Install package
        run: |
          # Disable Cassandra optional extensions (faster testing).
          export CASS_DRIVER_NO_EXTENSIONS=1
          uv pip install -e ."[test,aio,bloom]"
          uv pip list
      - name: Test with pytest
        run: |
          export DO_TEST_CASSANDRA=true
          uv run pytest
      - name: Minimize uv cache
        run: uv cache prune --ci

What changed

1 third-party action is referenced by a movable tag. Pin it to the commit SHA (Latchkey resolves and applies this automatically) so a repointed tag cannot change what runs.

What Latchkey heals here

This workflow has steps that commonly fail on transient issues (network, registries, flaky browsers). On Latchkey managed runners they are detected, retried, and self-healed instead of failing your build:

This workflow runs 1 job per trigger. On Latchkey the same minutes cost up to 58% less than GitHub-hosted, with zero queue time.

Actions used in this workflow

actions/checkout astral-sh/setup-uv