FLIN
The language that replaces 47 technologies
A compiled, full-stack programming language built from scratch in Rust. One syntax for frontend, backend, database, and tooling. 3,200+ tests. 180 embedded UI components. Zero npm dependencies.
Building FLIN
#055 -- The Temporal Model Complete: What No Other Language Has
A retrospective on FLIN's complete temporal model -- 152 out of 160 tasks, 10 categories at 100%, and why no other programming language offers automatic versioning, time-travel queries, and temporal analytics as language primitives.
#059 -- Constraints and Validation in FlinDB
How FlinDB enforces data integrity with declarative constraints -- unique, required, check, pattern, immutable, and more -- all without writing a single SQL trigger.
#064 -- 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.
#075 -- HTTP Client Built Into the Language
How FLIN ships a complete HTTP client as a built-in language feature -- GET, POST, PUT, DELETE with JSON handling, timeouts, retries, and headers, all without importing a library.
#080 -- Error Tracking and Performance Monitoring
How FLIN ships built-in error tracking and performance monitoring -- structured logging, automatic error capture, timing utilities, and memory tracking, all without external services.
#093 -- Theme Toggle and Dark Mode
How FLIN's theme system supports light, dark, and system-preference modes -- with smooth transitions, persistent preferences, and zero-configuration integration across all FlinUI components.
#095 -- 151 FlinUI Components Built by AI Agents
How we used parallel AI agents to build 151 FlinUI components in a single extended session -- the orchestration strategy, quality controls, and what it reveals about AI-assisted development.
#118 -- AI Gateway: 8 Providers, One API
How FLIN's AI Gateway provides a unified interface to OpenAI, Anthropic, DeepInfra, Google, Mistral, Cohere, Groq, and local models -- switch providers by changing one line of configuration.
#100 -- Request Context Injection
How FLIN injects params, query, body, headers, cookies, and session into every route handler automatically -- zero imports, zero boilerplate, zero ceremony.
#005 -- The Golden Rule: One .flin File Is All You Need
FLIN's golden rule: one .flin file replaces 15 config files. No package.json, no tsconfig, no webpack.
#068 -- FlinDB Hardening for Production
How Session 308 hardened FlinDB for production with CRC-32 WAL checksums, auto-checkpointing, cross-platform file locking, per-entity-type data files, history deduplication, and schema persistence.
#135 -- File Preview Generation
How FLIN generates preview thumbnails for uploaded files automatically.