Pubsub

Communication Protocols: From HTTP to MQTT In a connected world, devices and apps exchange data using protocols. HTTP powers the web with request-response messages, while MQTT offers a lightweight route for many devices to share updates via a central broker. Both have a place, depending on goals like speed, bandwidth, and reliability. HTTP and REST basics HTTP is built for request-response. A client asks for a resource, a server returns data and status. Each exchange is stateless, making servers simple and scalable. Headers carry information about type, length, and authentication. The same pattern underpins REST APIs, enabling caching, retries, and clear error handling. ...

Communication Protocols: From HTTP to MQTT Protocols are the language devices use to share data. HTTP powers most web and API conversations. It follows a request–response pattern: a client asks for a resource, a server replies. The messages are often short, and each request starts a new transaction. MQTT works in a different pattern: a central broker coordinates a publish–subscribe flow, where devices publish to topics and others subscribe to what they need. This setup shines when networks are noisy or devices run on limited power. ...

Messaging Protocols and Real-Time Apps Real-time apps rely on fast, predictable communication. The messaging protocol you choose affects latency, how you guarantee order, and how you handle occasional network hiccups. This guide reviews common protocols and when to use them with confidence. WebSocket shines in interactive experiences. It opens a persistent two-way channel after a short HTTP handshake, so servers can push updates as soon as events happen. It works well for chat, live dashboards, and collaborative apps. ...

Event driven architectures and messaging queues Event driven architectures treat events as the central unit of work. A service emits an event when something happens, and other services listen and react. This approach decouples components, improves resilience, and helps systems scale with demand. Messaging queues and brokers act as the pipes between producers and consumers, offering durability, backpressure handling, and reliable delivery. Key components help you map real world needs to a robust flow. Producers emit events, a broker stores and routes them, and consumers pick up events to process. Topics or queues organize events, while delivery guarantees guide retries and failures. Observability and tracing complete the picture, so teams can see how events move, where delays happen, and where errors occur. ...

Communication Protocols in IoT and Cloud IoT devices connect to cloud services and apps through a mix of protocols. The right choice affects power use, reliability, latency, and cost. In practice, teams favor lightweight, secure options for constrained devices and stronger transports for cloud endpoints. Key considerations include network bandwidth, message size, device capabilities, and required security. Interoperability with cloud platforms also matters, so standard protocols help avoid vendor lock. ...