Prerequisites You should read Part 1: Redis in Production — Persistence, Replication, and HA first, or already understand RDB vs AOF, Redis Sentinel, and Redis Cluster mode. Basic AWS familiarity (VPCs, security groups, EC2 instance families) is expected. You don’t need prior hands-on experience with MemoryDB or ElastiCache Serverless. The Problem: “Just Use ElastiCache” Is… Read More »
TL;DR: Most production “AI agents” are actually deterministic workflows — and that’s fine, but the architecture decision you make right now determines whether your system costs $0.10 or $50 per request, whether it completes in 3 seconds or 3 minutes, and whether you can debug it when it fails at 2am. This post maps Anthropic’s… Read More »
What you’ll learn The problem BFF solves If multiple clients (web, mobile, partner apps) call the same “generic” backend, you often end up with: Backend for Frontend (BFF) fixes this by creating a backend tailored to a specific frontend: BFF in one sentence A BFF is a client-specific backend that aggregates and shapes data exactly… Read More »
What you’ll learn The problem: distributed transactions without a 2PC In a monolith, you might wrap changes in a single database transaction. In microservices (or distributed systems), a single business action often spans multiple components: You can’t easily use a single ACID transaction across multiple independent datastores and services (and you generally shouldn’t). Saga is… Read More »
What you’ll learn Video discussion on YouTube – https://youtu.be/2lFW5H3ZzLA The problem CQRS solves In many systems, we try to make one database schema do everything: As the system grows, that single model starts to hurt: CQRS (Command Query Responsibility Segregation) is a pattern that says: CQRS in one sentence CQRS separates the write path (commands)… Read More »
AWS Lambda is widely loved for its simplicity, auto-scaling, and frictionless deployments. You deploy code, AWS handles the scaling, and everything “just works”. Beneath that convenience lies a largely unknown and rarely discussed limit that can suddenly bring your entire CI/CD pipeline to a halt: If your Lambda-heavy compute has a lot of functions deployed… Read More »
TL;DR Project timeline snapshot Phase Day Milestone Kickoff 0 Backlog crosses 1,200 tickets; AI assistant charter approved. Prototype (Act I) 3 Bedrock-based helper drafting answers with lineage and manual QA. Reliability (Act II) 14 RAG + eval harness hits ≥85% correct with citations. Production hardening (Act III) 28 Guardrails, SLOs, CI/CD, and cost controls live… Read More »
Selecting the right compute model is one of the biggest architectural decisions teams face on AWS. This guide contrasts serverless functions powered by AWS Lambda with containerized services running on Amazon ECS with Fargate. You’ll find side-by-side diagrams, architecture variants (including API Gateway front doors), and a comprehensive comparison of cost, performance, security, scaling, and… Read More »
This blog provides a comprehensive overview of one of the most popular serverless architectural patterns on AWS: a REST API powered by API Gateway, AWS Lambda, and DynamoDB. This pattern is ideal for building scalable, cost-effective CRUD (Create, Read, Update, Delete) APIs without managing any servers. 1. Architecture Overview The flow is designed for high… Read More »
Introduction Once SAML SSO authentication is complete and an auth code has been generated, the next critical phase begins: Authorization. This comprehensive guide explores how the one-time auth code is securely exchanged for access tokens, how those tokens enable API access control through AWS Lambda authorizers, and how role-based permissions are enforced throughout the system.… Read More »