Terms starting with "A"
AJAX Patterns for PHP Backends
ES2017
1
Patterns for communicating with PHP backends via fetch — JSON APIs, CSRF tokens, error handling, and response parsing.
3mo ago
javascript intermediate
Axios — HTTP Client for PHP APIs
ES2015
1
Axios is a promise-based HTTP client with interceptors, automatic JSON parsing, and CSRF token injection — common in Laravel and Symfony frontends.
3mo ago
javascript intermediate
Abstract Factory Pattern
PHP 5.0+
Creates families of related objects ensuring they are used together consistently without mixing implementations.
3mo ago
quality intermediate
Accessibility Testing Tools
PHP 5.0+
axe, Lighthouse, WAVE catch 30-40% of issues automatically — manual keyboard and screen reader testing is required for the rest.
3mo ago
accessibility intermediate
Accessible Forms
HTML5
1
Every input needs a visible label, errors linked via aria-describedby, required fields indicated, and validation announced via aria-live.
3mo ago
accessibility intermediate
Accessible SVGs
SVG1.1
Decorative SVGs need aria-hidden=true; informative SVGs need role=img and aria-label or title+desc elements.
3mo ago
accessibility intermediate
Active Record Pattern
PHP 5.0+
A design pattern where a database row is wrapped in an object that includes both the data and the persistence logic — the object knows how to save, update, and delete itself.
3mo ago
quality intermediate
Adjacency Matrix vs Adjacency List
1
Two ways to represent a graph — adjacency matrix (2D array, O(1) edge lookup, O(V²) space) vs adjacency list (array of lists, O(V+E) space, better for sparse graphs).
3mo ago
data_structures intermediate
Aggregate Design Heuristics
PHP 7.0+ Rules for sizing aggregates correctly — small aggregates with single-entity transactions, referencing other aggregates by ID, and designing boundaries around invariants not convenience.
3mo ago
architecture advanced
Ahead-of-Time vs Just-in-Time Compilation
1
AOT compiles all code before execution (C, Go, Rust — fast startup, predictable performance). JIT compiles hot paths at runtime (PHP 8+, JVM — adapts to actual usage patterns).
3mo ago
compiler intermediate
AI API Cost Management
1
Strategies to reduce LLM API costs — caching identical prompts, batching requests, choosing smaller models for simpler tasks, and minimising context length.
3mo ago
ai_ml intermediate
AI Evaluation Metrics
4
Quantitative measures for assessing LLM output quality — BLEU, ROUGE, perplexity for text generation; precision, recall, F1 for classification; human evaluation for open-ended tasks.
3mo ago
ai_ml advanced
AI Function Calling & Tool Use
PHP 8.0+
LLMs requesting execution of application-defined functions — the model returns structured arguments; the application controls execution and must validate inputs.
3mo ago
ai_ml advanced
AI-Assisted Code Generation
5
Using LLMs to generate, complete, or refactor code — powerful for boilerplate and exploration but requiring review for correctness, security, and licence compliance.
3mo ago
ai_ml intermediate
Alert Fatigue
When alerts fire so frequently or for such trivial reasons that on-call engineers begin ignoring them — the most dangerous state for a production monitoring system.
3mo ago
observability intermediate
Amortized Analysis
Averaging the cost of an operation over a sequence — explaining why dynamic array append is O(1) amortised despite occasional O(n) resizes.
3mo ago
algorithms advanced
API Abuse Prevention
PHP 5.0+ Techniques to detect and block bots, scrapers, credential stuffing, and automated abuse — beyond basic rate limiting to behavioural and intelligence-based controls.
3mo ago
security advanced
API Authentication Patterns
1
Bearer tokens (JWT) for user sessions, API keys for machine-to-machine, mTLS for highest-security internal services — matching authentication method to the use case.
3mo ago
api_design intermediate
API Backwards Compatibility
Rules for evolving an API without breaking existing clients — additive changes are safe, removals and renames require versioning, and deprecation needs a documented sunset period.
3mo ago
api_design intermediate
API Composition Pattern
An API layer aggregates parallel service calls into a single client response — reducing N round trips to 1 and improving perceived latency.
3mo ago
architecture advanced