Orva Functions: Self-Hosted Serverless Runtime

• Orva provides a self-hosted function runtime designed for homelabs or single on-premises servers.
• It allows you to deploy JavaScript, TypeScript, and Python functions.
• Functions are executed within an nsjail sandbox, with five kernel-enforced boundaries per call to isolate them from the host.
• Experience fast cold starts (50-500 ms) and warm hits (2-15 ms) with minimal memory usage (~18 MB).
• Key Features:
  • No Control Plane: No external database or telemetry required.
  • State Management: State is managed via a single SQLite file and a directory of function versions.
  • Built-in Tools: Includes a dashboard, CLI, MCP server, and an AI assistant for instance operation.
  • Simplified Development: Write handlers without needing to learn complex new concepts.
  • Runtimes: Supports latest-stable Node.js and Python. TypeScript is supported via build-time compilation to JavaScript.
  • Integrated SDK: Provides built-in capabilities for Storage, function-to-function calls, background jobs, and schedules.
  • Isolation: Features five layers of kernel-enforced isolation: User namespace, Read-only root, Private filesystem, cgroup v2 limits, and seccomp allowlist.
  • Network Control: Network access is off by default, with options for egress traffic through a userspace network stack.
  • Operate: Offers features like KV store, function-to-function calls, streaming responses, background jobs, cron schedules, webhooks, tracing, invocation logs, activity feed, deployments with rollback, warm pools, egress control, API keys, MCP server, and an AI assistant.
  • What it is Not: Not multi-tenant, not a defense against kernel zero-days, not a managed platform, and not a horizontal cluster.
• Installation: Easily install via Docker Compose, Docker, bare metal script, or CLI-only installation.
• Open Source: Licensed under Apache 2.0, with the runtime, dashboard, CLI, and MCP server in a single repository.