evictStale() — mcp Function Reference

Architecture documentation for the evictStale() function in graph-cache.ts from the mcp codebase.

Function typescript GraphCache Indexing calls 1 called by 1

Entity Profile

GraphCache→ Indexing→ evictStale() — mcp Function Reference

Dependency Diagram

graph TD
  bd216705_efc6_4dc4_e563_eb99bcf30d21["evictStale()"]
  6407330b_8aa1_cc04_569a_747f6b1debfd["set()"]
  6407330b_8aa1_cc04_569a_747f6b1debfd -->|calls| bd216705_efc6_4dc4_e563_eb99bcf30d21
  d6ed9355_f977_306b_b0ef_d7220fdefe68["get()"]
  bd216705_efc6_4dc4_e563_eb99bcf30d21 -->|calls| d6ed9355_f977_306b_b0ef_d7220fdefe68
  style bd216705_efc6_4dc4_e563_eb99bcf30d21 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/cache/graph-cache.ts lines 337–356

  evictStale(): number {
    const now = Date.now();
    const keysToEvict: string[] = [];

    // Find all stale entries
    for (const [key, entry] of this.cache) {
      if (now - entry.createdAt > this.maxAgeMs) {
        keysToEvict.push(key);
      }
    }

    // Evict them
    for (const key of keysToEvict) {
      const entry = this.cache.get(key)!;
      this.currentNodes -= entry.nodeCount;
      this.cache.delete(key);
    }

    return keysToEvict.length;
  }