Intermediate terms
Regex Escape Sequences
PHP 4.1+
1
Backslash sequences in regex that either match special characters literally or represent character classes, anchors, and control characters.
4mo ago
Regex intermediate
Rust Pattern Matching
2
Rust's match and if let destructure values and enforce exhaustive handling of every variant at compile time.
4mo ago
Rust intermediate
Rust Traits
2
Traits define shared behavior that types opt into explicitly, enabling polymorphism through composition rather than class inheritance.
4mo ago
Rust intermediate
Cloud Backup & Disaster Recovery
1
Automated backups with tested restores, defined RPO/RTO targets, and cross-region replication for catastrophic failure recovery.
4mo ago
Cloud intermediate
Test Parallelization Gotchas
Hidden runtime hazards when tests execute concurrently — shared state, race conditions, and resource contention turn green suites red intermittently.
4mo ago
Testing intermediate
Cloud Region Selection
1
The decision of which cloud region(s) to deploy workloads into, balancing user latency, data residency law, cost, and service availability.
4mo ago
Cloud intermediate
AI Fallback Routing
5
Automatically routing LLM requests to alternative models or providers when the primary fails, times out, or returns unusable output.
4mo ago
AI / ML intermediate
AI Model Selection Criteria
5
The systematic factors engineers weigh when choosing an LLM for a task: capability, cost, latency, context window, modality, hosting, and licensing.
4mo ago
AI / ML intermediate
AI Prompt Versioning
The practice of treating prompts as versioned artifacts — tracking changes, correlating outputs to prompt revisions, and enabling rollback when quality regresses.
4mo ago
AI / ML intermediate
AI Synthetic Data Generation
Using generative models to produce artificial training, testing, or augmentation data that mimics the statistical properties of real datasets without exposing originals.
5mo ago
AI / ML intermediate
Memory Pressure Detection
PHP 7.0+
Proactively identifying when a PHP process approaches its memory limit so corrective action can be taken before a fatal error.
5mo ago
Performance intermediate
Database Query Result Streaming
PHP 8.0+
2
Processing large result sets row-by-row without loading the entire dataset into memory - essential for PHP CLI scripts handling millions of rows.
5mo ago
Database intermediate
Error Recovery Patterns
Design strategies for gracefully handling failures and restoring system functionality without data loss or user disruption.
5mo ago
General intermediate
NoSQL Injection
PHP 5.4+
1
Attacker-controlled input embedded into NoSQL queries (MongoDB, Redis, Couchbase) that subverts query intent — bypassing auth, exfiltrating data, or executing server-side code.
CWE-943 OWASP A3:2021
5mo ago
Security intermediate
8.8
Prompt Caching
API feature where a static prompt prefix (system instructions, large context) is cached server-side, dramatically reducing cost and latency on repeated calls that share the prefix.
5mo ago
AI / ML intermediate
Reasoning Models & Test-Time Compute
A class of LLMs trained to allocate extra inference-time compute to internal reasoning before answering, achieving large gains on math, code, and logic at the cost of latency and tokens.
5mo ago
AI / ML intermediate
Server-Side Includes (SSI) Injection
Attacker-controlled SSI directives (`<!--#exec ... -->`) injected into pages parsed by Apache or another SSI-enabled server, achieving file disclosure or remote command execution.
CWE-97 OWASP A3:2021
5mo ago
Security intermediate
9.8
Internal Developer Platform (IDP)
A curated, self-service layer on top of cloud and CI/CD infrastructure that product teams use to ship services without filing tickets — paved roads that make the right thing the easy thing.
5mo ago
DevOps intermediate
Load Balancer Types — L4 vs L7
2
Layer-4 load balancers forward raw TCP/UDP packets based on IP and port; layer-7 load balancers terminate HTTP and route based on paths, headers and cookies — different trade-offs for different traffic.
5mo ago
Cloud intermediate
Shadow DOM
A browser feature that attaches a scoped, encapsulated DOM subtree to an element — styles and IDs inside the shadow tree do not leak in or out, enabling true component isolation on the web.
5mo ago
Frontend intermediate