evictStale() — mcp Function Reference

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

Function typescript GraphCache DiskPersistence calls 1 called by 1

Entity Profile

GraphCache→ DiskPersistence→ evictStale() — mcp Function Reference

Dependency Diagram

graph TD
  f25d6639_05c4_e928_c1e5_13a8b4319dce["evictStale()"]
  b965d3cf_dacd_81fc_77e7_dbe9bdef8bbc["set()"]
  b965d3cf_dacd_81fc_77e7_dbe9bdef8bbc -->|calls| f25d6639_05c4_e928_c1e5_13a8b4319dce
  55bde18a_7860_173e_f211_5874970475e3["get()"]
  f25d6639_05c4_e928_c1e5_13a8b4319dce -->|calls| 55bde18a_7860_173e_f211_5874970475e3
  style f25d6639_05c4_e928_c1e5_13a8b4319dce 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;
  }