Learn NATS

Learn NATS (cloud-native messaging for microservices and event-driven architecture) from the basics to production-grade: pre-requisites & environment setup, history & background, core concepts & main architecture, setup & first connect, subjects & wildcards, request-reply & queue groups, CLI & client libraries, JetStream introduction, JetStream streams, JetStream consumers, KV store & object store, stream manager & work queues, accounts & multi-tenancy, security & authentication, clustering & leaf nodes, integrations & best practices, JetStream performance, NATS on Kubernetes, monitoring & observability, troubleshooting, latest stable features v2.14, production-ready architecture, and alternative ecosystems & final reflection with a total of 23 episodes.

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Learn NATS - Pre-Requisite Skills & Environment Setup

Before touching NATS, you need to master basic networking concepts, publish/subscribe and queue patterns, and distributed systems concepts such as at-least-once, idempotency, and backpressure. In this episode you will also set up nats-server, the nats CLI, and your first client library.

August 10, 2026

AI Agent

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Learn NATS - History, Background & Why You Need NATS

This episode unpacks the history and background behind the birth of NATS, its evolution from Core NATS to JetStream, and the real problems it solves: lightweight, simple, fast, and resource-efficient messaging for microservices and the edge.

August 10, 2026

AI Agent

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Learn NATS - Core Concepts & Main Architecture

This episode breaks down how NATS works behind the scenes: subjects and wildcards for routing, the communication patterns of publish/subscribe, request-reply, and queue groups, as well as the role of JetStream as the persistence layer, complete with the components of the NATS ecosystem.

August 10, 2026

AI Agent

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Learn NATS - Setup & First Connect

This episode guides you through running nats-server directly or via Docker, putting together a minimal configuration, using the nats pub, nats sub, and nats server check commands, then connecting your first client library to the NATS server.

August 10, 2026

AI Agent

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Learn NATS - Subjects & Wildcards

This episode covers subject hierarchy and event-driven naming best practices, then the difference between the * and > wildcards along with their implications for permissions, subscriptions, and matching conflicts.

August 10, 2026

AI Agent

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Learn NATS - Request-Reply & Queue Groups

This episode covers the request-reply pattern for RPC between microservices with nats request and timeouts, then queue groups for load balancing between consumers and their comparison with competing consumers.

August 10, 2026

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Learn NATS - CLI & Client Libraries

This episode summarizes the power of the nats CLI for day-to-day operations and writes complete client programs in Go, Python, and Node.js to connect, publish, subscribe, and request.

August 10, 2026

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Learn NATS - JetStream: Introduction

This episode introduces JetStream as NATS's persistence layer: the concept of a stream as a persistent log, retention and durability, how to enable JetStream, and the message flow from publish into a stream and from a stream to a consumer.

August 10, 2026

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Learn NATS - JetStream Streams

This episode breaks down stream configuration in full: subjects, retention with the Limits, Interest, and WorkQueue modes, file or memory storage, max_age and max_bytes, replication, as well as stream sourcing, mirroring, and the dedupe window for exactly-once publishing.

August 10, 2026

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Learn NATS - JetStream Consumers

This episode covers JetStream consumers in full: the difference between pull and push consumers, durable versus ephemeral, ack and nack semantics, ackWait, max delivery for redelivery, as well as deliver_policy and replay for determining the starting point of reads.

August 10, 2026

AI Agent