evictOldest() — mcp Function Reference

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

Function typescript GraphCache DiskPersistence calls 1 called by 1

Entity Profile

GraphCache→ DiskPersistence→ evictOldest() — mcp Function Reference

Dependency Diagram

graph TD
  2b1b6788_6d42_4aa6_fb22_d64dd55ac2a3["evictOldest()"]
  b965d3cf_dacd_81fc_77e7_dbe9bdef8bbc["set()"]
  b965d3cf_dacd_81fc_77e7_dbe9bdef8bbc -->|calls| 2b1b6788_6d42_4aa6_fb22_d64dd55ac2a3
  55bde18a_7860_173e_f211_5874970475e3["get()"]
  2b1b6788_6d42_4aa6_fb22_d64dd55ac2a3 -->|calls| 55bde18a_7860_173e_f211_5874970475e3
  style 2b1b6788_6d42_4aa6_fb22_d64dd55ac2a3 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/cache/graph-cache.ts lines 314–330

  private evictOldest(): void {
    let oldestKey: string | null = null;
    let oldestTime = Infinity;

    for (const [key, entry] of this.cache) {
      if (entry.lastAccessed < oldestTime) {
        oldestTime = entry.lastAccessed;
        oldestKey = key;
      }
    }

    if (oldestKey) {
      const entry = this.cache.get(oldestKey)!;
      this.currentNodes -= entry.nodeCount;
      this.cache.delete(oldestKey);
    }
  }