Elements is an integrated development environment for building and deploying web apps with AI agents. It combines a project server, app framework, and build tooling with built-in features like databases, authentication, and real-time pubsub, enabling rapid development and direct deployment to production machines without containerization.
A VFS extension enables SQLite to support concurrent writes from multiple threads and processes by using private WALs and snapshot isolation, achieving 5.7x throughput improvement with 16 threads (49,277 vs 8,630 tx/s) while keeping the database file format unchanged and requiring no schema modifications.