evictOldest() — mcp Function Reference

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

Function typescript GraphCache Eviction calls 1 called by 1

Entity Profile

GraphCache→ Eviction→ evictOldest() — mcp Function Reference

Dependency Diagram

graph TD
  044b41f9_d555_74fb_d6a4_6889502cdf08["evictOldest()"]
  6407330b_8aa1_cc04_569a_747f6b1debfd["set()"]
  6407330b_8aa1_cc04_569a_747f6b1debfd -->|calls| 044b41f9_d555_74fb_d6a4_6889502cdf08
  d6ed9355_f977_306b_b0ef_d7220fdefe68["get()"]
  044b41f9_d555_74fb_d6a4_6889502cdf08 -->|calls| d6ed9355_f977_306b_b0ef_d7220fdefe68
  style 044b41f9_d555_74fb_d6a4_6889502cdf08 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);
    }
  }