Optimize backend proxy for speed and stability, improve experimental features

[Copilot]

Addresses performance bottlenecks in the proxy backend through caching, reduced redundant operations, and improved data structures. Also implements the experimental preconfigured sites and dynamic loading features.

Backend Server (server/index.ts)

• Add routing cache with iterator-based eviction to skip redundant bareServer.shouldRoute() calls
• Enable static file caching with 1-day max-age and precompressed file support
• Increase highWaterMark to 64KB for better throughput
• Suppress verbose logging in production

Service Worker (public/sw.js)

• Replace Array.some() with Set for O(1) domain lookups on CAPTCHA/heavy-cookie domains
• Cache route decisions with 30s TTL
• Load scramjet config once per SW lifecycle instead of every fetch
• Precompile regex patterns for HTML injection

Proxy Utilities (src/utils/proxy.ts)

• Cache URL encodings and transport settings with TTL
• Prevent duplicate script loading
• Integrate experimental features via encodeURLWithExperiments()

New: Experimental Features (src/utils/experimental.ts)

• Preconfigured sites database (20+ sites with optimal proxy/transport combos)
• Dynamic loading handler that detects errors and cycles through fallback configurations

// Example: Amazon uses Scramjet + Bare for cookie handling
const PRECONFIGURED_SITES = {
  "amazon.com": { proxy: "sj", routingMode: "bare", reason: "Complex cookie handling" },
  "youtube.com": { proxy: "uv", routingMode: "wisp", transport: "libcurl" },
  // ...
};

Storage & Captcha Handler

• Add in-memory cache with batch eviction (10-20% per eviction cycle)
• Use requestIdleCallback for batched DOM mutations
• Prevent duplicate initialization

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• telemetry.astro.build
  • Triggering command: /usr/local/bin/node node /home/REDACTED/work/Radius/Radius/node_modules/.bin/astro build (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

optomize the backend proxy and fetures for speed, and stability on the back end to inprove site loading and reduce repetitive processes to decreace load time while maintiang all of the current fetures. also inprove the experemantal fetures

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