Optimize Long-Running C++ Build Pipeline

Context

TechCorp, a software development company, has a C++ project that currently takes 4 hours to compile and run tests in Jenkins. The build time is impacting developer productivity and slowing down the release cycle. The engineering team aims to streamline the pipeline to reduce compile times and enhance overall efficiency.

Current Architecture

Scale Requirements

• Build Frequency: 20 builds per day
• Concurrent Builds: Up to 5 concurrent builds
• Artifact Size: Average of 500MB per build
• Latency Target: Reduce build time to under 1 hour

Requirements

1. Design a Jenkins pipeline that supports incremental builds to minimize compilation time.
2. Implement parallel testing to run unit and integration tests concurrently.
3. Integrate caching mechanisms for dependencies and build artifacts.
4. Monitor build metrics and set up alerts for build failures and long-running jobs.
5. Utilize a containerized approach for consistent build environments.

Constraints

• Team: 6 developers, limited Jenkins expertise
• Infrastructure: On-premise Jenkins server with limited resources
• Budget: No additional budget for cloud services or new hardware
• Compliance: Must maintain current security and access controls