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Java OOP: The Four Pillars Explained With Examples

Learn the four pillars of Java OOP with working examples: encapsulation and access modifiers, inheritance with extends and super, overriding vs overloading, and abstraction with interfaces.

Sep 24, 20269 min read

Backend

Java Class vs Object: Constructors, References and Equality

Learn how a Java class and object relate: constructor rules, what new does, references, == vs equals, toString, pass by value, overloading, and abstract classes vs interfaces.

Sep 24, 202610 min read

Frontend

TypeScript Interface vs Type, Enums, Tuples and Guards

TypeScript interface vs type: when to use each, plus arrays vs tuples, enums and alternatives, excess property checks, function types, overloads and type guards with examples.

Sep 24, 202610 min read

Frontend

TypeScript Mapped Types, Unions and keyof Explained

Learn TypeScript mapped types step by step, with unions, intersections, discriminated unions, keyof, indexed access, key remapping and template literal types in practical examples.

Sep 24, 202610 min read

Frontend

TypeScript any vs unknown, void vs never: Basic Types

TypeScript any vs unknown explained with examples, plus primitive and literal types, strictNullChecks, void vs never, exhaustive checks, type assertions, satisfies and as const.

Sep 24, 202610 min read

Frontend

Java Swing GUI: Layout Managers and Event Listeners

Build Java Swing GUIs the right way: AWT vs Swing, core components, BorderLayout, FlowLayout, GridLayout and null layout, action, mouse and key listeners, paintComponent and the EDT.

Sep 24, 202610 min read

Backend

Redis Caching: Data Structures, TTL and Persistence

A practical guide to Redis caching: the cache-aside pattern in Go, data structures and their use cases, TTL and eviction policies, why single-threaded Redis is fast, RDB vs AOF, and Pub/Sub basics.

Sep 24, 202610 min read

Backend

RabbitMQ Exchange Types and Reliable Messaging

Learn the four RabbitMQ exchange types (direct, fanout, topic, headers) with Go examples, plus publisher confirms, durable quorum queues, manual acks, dead letter exchanges and prefetch.

Sep 24, 202610 min read

Backend

Preventing Race Conditions in Payment Systems

A practical guide to preventing race conditions in payment systems: atomic conditional updates, SELECT FOR UPDATE, optimistic locking, multi-row rules, and idempotency keys that stop double charges.

Sep 24, 202610 min read

Showing 19-27 of 65 articles

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