Deployment Testing
Canary deployments let you ship new code to a small percentage of users before rolling it out to everyone. When something goes wrong—and in production, something always eventually goes wrong—only a fraction of your users are affected, and you can roll back quickly. But canary deployments only work
Testing
Podman is a daemonless, rootless container engine that's fully compatible with Docker CLI syntax. For testing pipelines, this means you can run containers without a Docker daemon, without root privileges, and without the security concerns that come with a socket-exposed daemon. This guide covers how to use
Testing
Managing Protobuf schemas across multiple services is painful without tooling. Proto files drift from naming conventions, breaking changes slip in without warning, and protoc invocations become unmaintainable shell scripts. buf is the modern solution: a CLI that handles linting, breaking change detection, and code generation with a single buf.yaml.
Deployment Testing
Blue-green deployment is one of the simplest and most reliable deployment strategies. You run two identical production environments—blue and green—and switch traffic between them during deployments. The environment not serving traffic is updated, validated, and switched on. Rollback is instantaneous: just switch traffic back. The strategy is
Test Automation
Bazel is a build and test tool originally developed at Google to handle monorepos at extreme scale. Its core guarantees are hermeticity (tests can't accidentally read the network or undeclared files) and caching (identical inputs produce identical cached outputs). This makes Bazel test results fully reproducible and shareable
Testing
Azure Container Apps (ACA) is Microsoft's serverless container platform built on Kubernetes and KEDA. It handles scaling, load balancing, and traffic management for you. Testing ACA deployments requires verifying not just that your container runs, but that scaling behaves correctly, revision traffic splitting works, health probes pass, and
Testing
The Pact Broker is the hub of your contract testing workflow. Consumers publish pacts to it. Providers fetch pacts from it, run verification, and publish results back. The broker tracks which consumer/provider version pairs are compatible and answers the critical question: "can this version be safely deployed?"
AWS
AWS EKS adds a Kubernetes control plane on top of AWS infrastructure, which means you're testing both Kubernetes abstractions and AWS-specific behavior. A Pod that works in local kind or minikube may fail in EKS due to IAM Roles for Service Accounts (IRSA), VPC CNI networking, or
AWS
Testing containerized workloads on AWS ECS and Fargate requires a different mindset than testing traditional server-based applications. Your containers are ephemeral, networking is abstracted, and the control plane sits between you and your code. This guide covers practical integration testing patterns for ECS and Fargate workloads. Why ECS/Fargate
AWS
CloudFormation templates grow from 50 lines to 5000 lines. They define VPCs, IAM policies, RDS instances, and load balancers. A misconfigured security group or a missing IAM permission isn't a code bug — it's an infrastructure outage or a security incident. Testing CloudFormation templates rigorously is not
Testing
Most Ansible roles are never tested. You write the role, run it on a server, see that it "works," and commit. The next engineer who touches it runs into a failure on Ubuntu 22 that worked on Ubuntu 20, or discovers the role isn't idempotent — running
Testing
Snapshot testing works seamlessly in a local development environment but introduces specific challenges in CI/CD pipelines: snapshots may differ across operating systems, developers can't run jest -u in CI, and snapshot updates need to make it into the repository without blocking deployments. This guide covers the patterns