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This article explains event‑driven architecture, its advantages, core concepts such as events, producers, consumers and brokers, and demonstrates practical implementations with AWS SQS, RabbitMQ, Apache Kafka, AWS EventBridge, CloudEvents format, and the Saga pattern for reliable distributed workflows.
This article explains the serverless execution model, compares major providers such as AWS Lambda, Vercel Functions, and Cloudflare Workers, and offers practical code examples and cold‑start mitigation techniques for building and operating serverless applications.
This article introduces NewSQL databases, compares popular products such as TiDB, CockroachDB, SingleStore, and YugaByteDB, explains HTAP architecture and storage‑compute separation, demonstrates TiDB configuration and serverless scaling, and provides concrete migration and real‑time analytics examples with code snippets.
This article introduces time‑series databases, explains their core characteristics and typical use cases, and provides detailed overviews of InfluxDB, TimescaleDB, and Prometheus—including data models, query languages, configuration examples, and code snippets for practical integration.
This article explains what serverless databases are, compares them with traditional databases, and provides detailed overviews, core concepts, and code examples for four major services—PlanetScale, Neon, Supabase, and Turso—highlighting features such as automatic scaling, pay‑as‑you‑go pricing, and global replication.
This article introduces WebRTC, compares it with WebSocket, explains its architecture and core APIs, shows how to build a FastAPI‑based signaling server, demonstrates a full JavaScript P2P connection setup with TURN configuration, and provides code for screen sharing and audio/video controls.
This article explains WebSocket fundamentals, compares it with HTTP polling, details the handshake and frame format, and provides complete server‑side examples in Python, FastAPI, Go, and Java Spring, followed by a full real‑time chat system with private messaging, database schema, heartbeat handling, and Redis‑based online presence management.
This article introduces gRPC, Google’s high‑performance RPC framework built on HTTP/2 and Protocol Buffers, compares it with REST, explains protobuf type mappings, demonstrates service definitions and all four communication patterns, and covers advanced topics such as interceptors, load balancing, deadlines, error handling, and microservice integration.
Prompt engineering optimizes LLM interactions by designing clear system and user prompts, structuring examples, and employing techniques such as few‑shot learning, chain‑of‑thought, HyDE, ReAct, and automated optimizers, which together improve accuracy, consistency, efficiency, and token cost.
This article introduces LangChain, an open‑source framework for building LLM applications, covering its modular design, supported models, core components such as Prompt templates, Chains, Memory, Agents, and practical Python code examples for each feature.
