Terms starting with "R"
Remote File Inclusion (RFI)
PHP 5.0+
An attacker tricks include() or require() into loading a PHP file from an attacker-controlled remote URL, achieving code execution.
CWE-98 OWASP A3:2021
6mo ago
Security intermediate
9.8
Render-Blocking Resources
CSS and synchronous JavaScript in <head> that prevent the browser from rendering any content until they are downloaded and parsed — the primary cause of slow First Contentful Paint.
6mo ago
Frontend intermediate
Replay Attack
PHP 5.0+
1
An attacker captures a valid request or authentication token and resubmits it later to gain unauthorised access or repeat an action.
CWE-294 OWASP A2:2021
6mo ago
Security intermediate
7.5
Responsible Vulnerability Disclosure
6
The practice of privately reporting security vulnerabilities to vendors before publishing, allowing time for a fix.
6mo ago
General intermediate
REST (Representational State Transfer)
3
An architectural style for distributed hypermedia systems using HTTP verbs, stateless interactions, and resource-oriented URLs.
6mo ago
Architecture beginner
REST Architectural Constraints
PHP 5.0+
The six constraints Fielding defined for REST — statelessness, uniform interface, client-server separation, cacheability, layered system, and optional code on demand.
6mo ago
API Design intermediate
Retrieval-Augmented Generation (RAG)
1
A pattern that combines document retrieval with LLM generation — relevant documents are fetched and injected into the prompt context, grounding responses in current, specific data.
6mo ago
AI / ML advanced
Retry Pattern with Exponential Backoff
PHP 5.0+
2
Automatically retrying failed operations with increasing delays — preventing thundering herd and handling transient failures gracefully.
6mo ago
Architecture intermediate
Reverse Proxy vs Load Balancer
A reverse proxy forwards client requests to backend servers, adding SSL termination, caching, and compression. A load balancer distributes traffic across multiple backends for scalability.
6mo ago
Networking intermediate
Right-to-Left Language Support
HTML5
2
Design and implementation considerations for RTL languages (Arabic, Hebrew, Persian, Urdu) — text direction, mirrored layouts, and bidirectional text handling.
6mo ago
i18n intermediate
Rolling Deployment
Gradually replacing old application instances with new ones, a few at a time, so the service remains available throughout the upgrade.
6mo ago
DevOps intermediate
Rate Limiting
PHP 5.0+
3
Restricting the number of requests a client can make in a given time window to prevent abuse, DoS, and credential stuffing.
CWE-770 OWASP A5:2021
7mo ago
Performance intermediate
Repository Pattern
PHP 5.0+
4
Abstracts the data persistence layer behind an interface, decoupling domain logic from database implementation details.
7mo ago
General intermediate
RangeError — Stack Overflow & Invalid Values
ES5
RangeError is thrown when a value is outside its allowed range — most commonly from infinite recursion (stack overflow) or invalid array/string sizes.
JavaScript intermediate