Easy Learn
A plain-language, ground-up guide to the biggest architecture decision most software teams ever make. Covers the history and motivation, core concepts (coupling, cohesion, bounded contexts, CAP, latency vs throughput), monolith and microservices architectures with worked bookstore examples, request lifecycles, honest advantages and trade-offs, performance and scalability, high availability and failure…
A complete, beginner-to-production tutorial on the distributed monolith: the most common failure mode in modern software architecture, where a system is physically split into services but stays logically coupled like a single application. Covers the LEGO-castle analogy and the 1990s-through-present timeline (single monolith, SOA / ESB, microservices at Netflix and…
A complete, plain-language guide to single points of failure (SPOF): the village-bridge and one-legged-table analogy, what a SPOF really is (defined by consequence, not probability), a short history from bridge and ship builders through early computer networks, why SPOFs happen at all (starting small, cost pressure, time pressure, invisible growth),…
A complete, plain-language guide to health checks: the big idea told through a busy-restaurant analogy, what a health check really is (a small, repeated endpoint that returns a short honest answer), why it matters for early warning / self-healing / safer updates / trust, how it actually works through pull…
A complete, plain-language guide to failover: the big idea told through a relay-race analogy, what failover really means and how it differs from a switchover, why it matters so much for trust / money / safety / peace of mind, how systems notice trouble using heartbeats and health checks with…
A complete, plain-language guide to synchronous versus asynchronous communication: introduction and a little history from single-machine programs to the modern internet, the exact problem the choice solves, the phone-call versus letter analogy, twelve core terms (client, server, request, response, blocking, non-blocking, callback, latency, throughput, message queue, event, coupling), what synchronous…
A complete, book-quality tutorial on service orchestration: the wedding-planner analogy and a five-step history from 1990s EAI through BPEL, the microservices explosion, Kubernetes-style infrastructure orchestration, and modern durable workflow engines like Temporal, Camunda 8, AWS Step Functions and Netflix Conductor; the problem and motivation with an e-commerce checkout example; five…
A complete, plain-language guide to disaster recovery: introduction and a little history from duplicate paper ledgers through 1970s tape backups to modern cloud multi-region replication, the problem and motivation of an unplanned crisis, the house-fire-plan analogy, eight core-concept definitions, the DR versus backup versus HA versus failover distinction, RTO and…
A complete, ground-up tutorial on RTO (Recovery Time Objective) in disaster recovery: introduction and a six-step history from 1970s tape backups through 2020s ransomware and automated recovery, the problem and motivation of an undefined RTO, seven core concepts (DR, RTO, RPO, MTD, WRT, failover / failback, hot / warm /…
A complete, plain-language guide to RPO (Recovery Point Objective) in disaster recovery: introduction and a little history, the problem and motivation (the window of vulnerability between data creation and the safe copy), the video-game save-point analogy, eight core-concept definitions (RPO, RTO, backup, replication, data loss window, snapshot, checkpoint, change data…