DevOps Intermediate

What is Docker Compose?

A tool for defining and running multi-container Docker applications using a YAML configuration file.

Docker Compose defines multi-container applications in a docker-compose.yml file. Services, networks, and volumes are declared, and a single command (docker compose up) starts everything. This is ideal for development environments and simple deployments.

A typical configuration includes application server, database, cache (Redis), and reverse proxy containers with defined dependencies, environment variables, port mappings, and volume mounts.

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Related Terms

An architectural style where an application is composed of small, independent services that communicate over APIs.

A deployment strategy that gradually replaces old application instances with new ones, maintaining availability throughout.

An endpoint or mechanism that reports whether an application is running correctly and ready to handle requests.

Service Discovery

A mechanism that automatically detects and tracks the network locations of service instances in distributed systems.

An infrastructure layer that handles service-to-service communication, providing load balancing, encryption, and observability.

A high-performance web server and reverse proxy known for its stability, low resource usage, and ability to handle many concurrent connections.

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