Blog
All articles. All pillars. All authors.
OAuth2 and Social Authentication
How FLIN provides built-in OAuth2 functions for Google, GitHub, Discord, Apple, LinkedIn, and Telegram -- PKCE flows, state validation, and user creation in a standardized pattern.
WhatsApp OTP Authentication for Africa
How FLIN provides built-in WhatsApp OTP authentication -- the phone-first auth method designed for African markets where WhatsApp is the primary communication platform.
Request Body Validators
How FLIN's validate blocks enforce type safety, constraints, and business rules on incoming request data -- declarative validation that runs before your handler code and returns structured error responses.
75 Security Tests: How We Verified Everything
How we wrote 75 security tests for FLIN covering password hashing, JWT tokens, rate limiting, guards, CSRF, input validation, and session management -- ensuring every security feature works correctly.
Custom Guards and Security Middleware
How FLIN developers create custom guards and security middleware for application-specific access control -- verified email guards, subscription checks, IP restrictions, and audit logging.
The Intent Engine: Natural Language Database Queries
How FLIN's Intent Engine translates natural language into database queries -- the ask keyword that lets developers write 'users who signed up last week' instead of SQL joins and WHERE clauses.
Semantic Search and Vector Storage
How FLIN's semantic text type and search keyword enable meaning-based search -- automatic embedding generation, HNSW vector indexing, and cosine similarity ranking built into the language.
WebSocket Support Built Into the Language
How FLIN provides native WebSocket support through ws route blocks -- real-time communication without Socket.IO, without ws, without a separate server.
File Upload Support
How FLIN handles file uploads natively -- multipart parsing, size validation, type checking, and storage with save_file() -- no multer, no formidable, no configuration.
Response Helpers and Status Codes
How FLIN's response system turns return values into HTTP responses automatically -- JSON serialization, status codes, redirect helpers, and error formatting without boilerplate.
Security by Design: OWASP Top 10 in the Language
How FLIN addresses all OWASP Top 10 vulnerabilities at the language level -- not through libraries, not through configuration, but through design decisions that make insecure code impossible to write.
Graph Queries and Semantic Search
How FlinDB implements graph traversal algorithms and AI-powered semantic search with BM25, vector similarity, and hybrid Reciprocal Rank Fusion -- all built into a single embedded database.