DevOps Intermediate

What is Message Queue?

A communication mechanism that enables asynchronous message passing between services, decoupling producers from consumers.

Message queues store messages until consumers process them, enabling asynchronous communication. Producers send messages without waiting for consumers, improving system resilience and scalability. If a consumer is down, messages queue up and are processed later.

Popular systems include RabbitMQ (traditional messaging), Apache Kafka (event streaming), AWS SQS (managed queue), and Redis Streams. Use cases include order processing, email sending, log processing, and event-driven architectures.

Related Terms

Blue-Green Deployment

A deployment strategy using two identical environments where traffic is switched from the old version to the new one instantly.

Continuous Integration and Continuous Deployment — automated practices for building, testing, and deploying code changes.

A file containing build rules and commands that automates compilation and common project tasks using the make utility.

Incident Management

The process of detecting, responding to, and resolving service disruptions to minimize impact and restore normal operations.

A platform for building, shipping, and running applications in lightweight, isolated containers.

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

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