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This guide explains how to install Erlang, download and compile RabbitMQ 3.0.4, start the server in detached mode, verify its status, and troubleshoot common issues such as port conflicts on CentOS 6, providing complete command‑line instructions and configuration tips.
Version 25.1 of Erlang/OTP, the first maintenance patch for OTP 25, introduces production‑ready OpenSSL 3.0 crypto support, fixes a critical CVE‑2022‑37026 SSL/TLS client‑authentication bypass, adjusts engine loading behavior, and includes various minor bug fixes and enhancements.
This tutorial walks through preparing a CentOS 7 environment, installing required plugins, setting up Erlang, downloading and building RabbitMQ Server, starting the service, enabling the management UI, and managing users and permissions with detailed command examples.
This tutorial walks through downloading compatible Erlang versions, installing RabbitMQ on Windows, starting the service, verifying its status, and accessing the management UI with default credentials, providing a complete setup for backend development with RabbitMQ.
This article explains how EMQX 3.0 maintains routing and distribution layers, detailing the subscriber tables, shared‑subscription handling, topic‑trie structures, route look‑ups, and the Erlang code that drives message matching and dispatch across a clustered broker.
This article introduces the open‑source EMQX MQTT broker, explains the MQTT protocol basics, and provides an in‑depth analysis of the broker's connection and session processes—including their state structures, message flows for connect, subscribe, unsubscribe, ping, disconnect, and QoS 0/1/2 publishing—supported by illustrative code snippets and diagrams.
The article details Qunar's in‑house instant messaging platform, covering its purpose, protocol choices (XMPP with protocol‑buffer optimization), architecture based on ejabberd, message flow, reliability mechanisms, extensions such as bots and HTTP APIs, as well as extensive system‑level tuning for high‑concurrency TCP connections.
In this interview, Apache CouchDB project leaders Adam Kocoloski and Jan Lehnardt discuss the database's unique replication model, strengths and weaknesses, notable real‑world deployments, upcoming 3.0 and 4.0 releases, Kubernetes deployment advice, and guidance for newcomers to Erlang and the CouchDB community.
The article details a performance bottleneck investigation of an Erlang‑based service experiencing high CPU usage, describing the use of recon tools, pressure testing, analysis of Kafka and Nginx impacts, and the subsequent optimizations that doubled throughput to meet business requirements.
Over the past decade, Erlang has evolved from a niche functional language into a robust platform with powerful concurrency, fault tolerance, and a rich ecosystem, illustrated by its key applications, knowledge ladder, recent improvements, and future prospects for both Erlang and its Elixir community.
The article commemorates Joe Armstrong, the creator of Erlang, outlining his life, contributions to fault‑tolerant distributed computing, his influential talks in China, and the programming wisdom he shared, while providing links to his historic presentations.
This guide details high‑concurrency system performance metrics, testing methodologies using Tsung, and practical Linux and Erlang configuration tweaks—including kernel parameters, file descriptor limits, port ranges, and VM settings—to improve throughput, reduce latency, and effectively identify bottlenecks in production environments.
This guide explains how to install RabbitMQ, set up a three-node Erlang-based cluster on CentOS, configure hostnames, Erlang cookies, designate disk and RAM nodes, manage services, enable mirrored queues, and verify cluster status using command‑line tools.
Over the course of a week, the author explores Elixir’s design and features—covering its pipe operator, sigils, macro quoting, version handling, and differences from Erlang—while reflecting on language ergonomics, code readability, and functional programming concepts illustrated with concrete code examples.
Over the past two years WhatsApp has dramatically expanded its user base, hardware, and traffic while maintaining a tiny engineering team, highlighting the challenges of massive scalability, Erlang‑based distributed design, Mnesia database bottlenecks, decoupling strategies, and operational patches required to keep the service reliable.
The article analyzes WhatsApp's high‑scalability backend architecture, detailing its Erlang‑based server stack, massive user statistics, hardware deployment, custom protocols, performance‑tuning tools, and lessons learned from scaling to billions of messages with a tiny engineering team.
This article introduces Erlang as a general‑purpose concurrent language, highlighting its fault‑tolerant runtime, simple 550‑line syntax, pattern‑matching capabilities, process creation with spawn, and practical examples using the ibrowse HTTP library to demonstrate message passing and distributed computing.
This article examines WhatsApp’s high‑reliability architecture that supports 450 million users, detailing its Erlang‑based backend, hardware choices, scaling techniques, performance metrics, monitoring tools, and lessons learned from achieving up to two million concurrent connections on a single server.
This article reviews several Erlang-based web servers and frameworks—including Yaws, Mochiweb, Misultin, Cowboy, httpd, SimpleBridge, webmachine, Nitrogen, Zotonic, and Chicago Boss—highlighting their features, documentation quality, integration with supervision trees, and suitability for building high‑performance HTTP services.