Blog
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Stripe Integration for a $1.99/month SaaS
Checkout sessions, webhook signature verification, 60-day trials, and the full billing lifecycle -- how we integrated Stripe for a micro-SaaS at $1.99/month.
#022 -- Memory Management and Garbage Collection
Memory management in FLIN's VM: garbage collection, string interning, and heap allocation in Rust.
#041 -- The Never Type and Exhaustiveness Checking
How FLIN's Never type and exhaustiveness checking work together to guarantee that every code path is handled -- the compiler-enforced safety net for pattern matching and control flow.
#052 -- Version Metadata Access
How we exposed entity version metadata -- id, version_number, created_at, updated_at, deleted_at -- as first-class properties in FLIN, enabling audit trails with zero configuration.
#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.
#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.
#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.
#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.