CircleCI Pipeline Configuration

Create a CircleCI pipeline configuration for my project.

Project details:
- Language/Framework: [specify]
- Testing framework: [specify]
- Deployment targets: [AWS/GCP/Kubernetes/Heroku]
- Docker required: [yes/no]

Pipeline requirements:
1. Workflow with multiple jobs
2. Parallelism for tests
3. Caching strategies
4. Orbs utilization (AWS, Kubernetes, Slack)
5. Context and environment variables
6. Approval jobs for production
7. Scheduled workflows
8. Matrix builds
9. Artifact storage
10. Test splitting

Features:
- Branch filtering
- Tag-based deployments
- Dynamic configuration
- Reusable commands
- Setup workflows

Include .circleci/config.yml with best practices for performance and maintainability.