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v6.2.0 — Memory Optimization & Prompt Fix

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@zoharbabin zoharbabin released this 17 Apr 18:44
· 17 commits to main since this release
v6.2.0
5405b24

Highlights

  • 78% memory reduction: Per-instance idle RSS drops from ~430 MB to ~80-95 MB via lazy imports
  • Orphan prevention: PID lock file prevents duplicate server instances from accumulating
  • Prompt fix: MCP prompt number parameters now work correctly

Memory Optimization

Change Savings
Targeted crawlee imports (@crawlee/cheerio + @crawlee/core instead of umbrella) ~61 MB
Lazy-load PlaywrightCrawler on first JS scrape ~30-50 MB
Lazy-load document parsers (pdf-parse, mammoth, jszip) ~74 MB
Lazy-load express, cors, rate-limit in STDIO mode ~24 MB
Event store lazy loading (no eager disk load) ~5-50 MB

Process Lifecycle Improvements

  • PID lock file (storage/.server.pid): Kills stale orphan instances on startup
  • Stdin health check: Periodic check (5s) detects parent process death
  • sanitizeUrlCache cap: Bounded at 500 entries with FIFO eviction

Bug Fixes

  • z.number() → z.coerce.number() in fact-check (sources) and literature-review (yearFrom, sources) prompts — MCP passes all prompt arguments as strings
  • Added DOM lib to tsconfig for Playwright page.evaluate() browser context types

Install / Upgrade

npm install -g google-researcher-mcp@latest
# or
npx google-researcher-mcp@6.2.0

Full Changelog: v6.1.0...v6.2.0

📦 Installation

npm install google-researcher-mcp@6.2.0

🔗 Links

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