Easy Learn
A complete, beginner-to-production guide to one of the most consequential and recurring decisions a software architect makes: when to build a capability in-house, and when to buy it from a vendor. Opens with the restaurant analogy that motivates the whole shift – buy the commodity ingredients, cook only what makes…
A complete, beginner-friendly guide to the “A” in ACID: what atomicity means, its origins in Jim Gray’s 1970s-1980s transaction work and the ACID acronym coined by Reuter and Härder, the multi-step / concurrent / crash-recovery problems it solves, the core vocabulary (transaction, commit, rollback, ACID, statement- vs transaction-level atomicity), the…
A complete, plain-language guide to authentication vs. authorization: what each term really means, a short history from CTSS passwords through Kerberos, LDAP, SAML, OAuth and OpenID Connect, why the two are so easily confused (including 401 vs 403), authentication factors and MFA, the four authorization models (ACL, RBAC, ABAC, ReBAC),…
A complete, beginner-friendly guide to cloud capacity planning: what it really means, a short history from the Erlang formula to the cloud era, why we plan even with elasticity, the two failure modes (under- and over-provisioning), core vocabulary, predictive vs reactive scaling, architecture and components, how scaling decisions actually get…
A beginner-friendly, deep-dive walkthrough of Content Delivery Networks and the role they play in modern infrastructure: what a CDN really is, a short history from Akamai in 1998 to the edge-computing era, the problem CDNs solve (distance, single-server limits, unpredictable middle mile), core concepts and vocabulary (origin, edge, PoP, cache…
A beginner-friendly, architect-focused deep dive into why cloud cost management moved out of the finance department and onto the design whiteboard. Opens with the rental-car analogy that motivates the whole shift, then traces the full history of how compute became a metered utility: the launch of AWS EC2 in 2006,…
A beginner-friendly, cross-disciplinary deep dive into why experienced software architects lean so heavily on design patterns. Opens with the “big blocks at the bottom” and shared-recipe analogies that motivate the whole idea, then traces the story of design patterns from Christopher Alexander’s 1977 book A Pattern Language on building architecture,…
A beginner-friendly, cross-domain deep dive into throughput – the honest measurement of how much genuine work a system produces over a real stretch of time. Opens with the car-wash and cafeteria-line analogies that motivate the whole idea, then traces throughput’s history from twentieth-century factory floors through mid-century telecommunications, into the…
A beginner-friendly, production-grade deep dive into ACID – the four guarantees (Atomicity, Consistency, Isolation, Durability) that keep bank balances, shopping carts, and ticketing systems from silently corrupting. Covers the mobile-banking analogy that motivates the whole idea, then walks through the full history of ACID from Codd’s relational model in 1970,…
A complete, plain-language guide to rollbacks: the everyday-eraser analogy that opens the door, a short history from Jim Gray and IBM System R to Kubernetes and modern DevOps, the two problems that force rollback into existence (partial failures corrupting data and new code breaking production), the core vocabulary of transaction…