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refactor(coze): 使用 node-cache 替代自定义缓存实现 (#503)
- 为什么改:原有的 CozeApiCache 自定义缓存实现功能有限,使用成熟的 node-cache 库可以提供更好的性能、稳定性和功能支持 - 改了什么: - 移除了自定义的 CozeApiCache 类实现(apps/backend/lib/coze/cache.ts) - 在 CozeApiService 中改用 node-cache 库替代自定义缓存 - 调整了缓存初始化配置,设置合理的默认 TTL(5分钟)和性能优化选项 - 更新了缓存操作的实现方式以适配 node-cache API - 从 index.ts 中移除了 CozeApiCache 的导出 - 清理了 types/coze.ts 中不再需要的 CacheItem 接口定义 - 添加了 node-cache 依赖(v5.1.2) - 影响范围: - 仅影响 coze 模块内部实现,对外的 API 接口保持不变 - 缓存行为保持一致(工作空间30分钟、工作流5分钟过期) - 性能有所提升(useClones: false 配置) - 验证方式: - 确保工作空间和工作流的缓存功能正常工作 - 验证缓存过期时间符合预期 - 测试缓存清理和统计功能
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apps/backend/lib/coze/cache.ts

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This file was deleted.

apps/backend/lib/coze/index.ts

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@@ -1,5 +1,4 @@
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export { default as config } from "./config";
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export * from "@coze/api";
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export { createCozeClient } from "./client";
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export { CozeApiCache } from "./cache";
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export { CozeApiService } from "./service";

apps/backend/lib/coze/service.ts

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@@ -9,20 +9,25 @@ import type {
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CozeWorkflowsParams,
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CozeWorkflowsResponse,
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} from "@root/types/coze";
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import { CozeApiCache } from "./cache";
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import NodeCache from "node-cache";
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import { createCozeClient } from "./client";
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/**
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* 扣子 API 服务类
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*/
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export class CozeApiService {
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private cache = new CozeApiCache();
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private cache: NodeCache;
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private token: string; // 保留 token 字段用于可能的后续扩展(如 token 刷新)
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private client: ReturnType<typeof createCozeClient>;
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constructor(token: string) {
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this.token = token.trim();
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this.client = createCozeClient(this.token);
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// 初始化缓存
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this.cache = new NodeCache({
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stdTTL: 5 * 60, // 默认5分钟(工作流缓存使用此默认值)
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});
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}
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/**
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const { workspaces = [] } = await this.client.workspaces.list();
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this.cache.set(cacheKey, workspaces, "workspaces");
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// 设置缓存,过期时间30分钟
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this.cache.set(cacheKey, workspaces, 30 * 60);
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return workspaces;
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}
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const result = response.data;
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this.cache.set(cacheKey, result, "workflows");
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// 设置缓存,使用默认的5分钟过期时间
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this.cache.set(cacheKey, result);
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return result;
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}
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/**
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* 清除缓存
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* @param pattern 可选的模式字符串,清除所有以该模式开头的缓存键
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*/
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clearCache(pattern?: string): void {
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this.cache.clear(pattern);
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if (!pattern) {
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// 清除所有缓存
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this.cache.flushAll();
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return;
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}
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// node-cache 不支持模式匹配,需要手动实现
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// 使用前缀匹配,避免意外匹配
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const keys = this.cache.keys();
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const keysToDelete = keys.filter((key) => key.startsWith(pattern));
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this.cache.del(keysToDelete);
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}
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/**
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* 获取缓存统计信息
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*/
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getCacheStats(): { size: number; keys: string[] } {
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return this.cache.getStats();
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getCacheStats(): {
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size: number;
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keys: string[];
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hits: number;
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misses: number;
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hitRate: number;
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ksize: number;
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vsize: number;
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} {
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const stats = this.cache.getStats();
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const keys = this.cache.keys();
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const totalRequests = stats.hits + stats.misses;
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const hitRate = totalRequests > 0 ? stats.hits / totalRequests : 0;
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return {
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size: stats.keys,
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keys,
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hits: stats.hits,
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misses: stats.misses,
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hitRate,
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ksize: stats.ksize,
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vsize: stats.vsize,
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};
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}
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}

apps/backend/types/coze.ts

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@@ -149,18 +149,6 @@ export interface CozePlatformConfig {
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token: string;
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}
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/**
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* 缓存项接口
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*/
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export interface CacheItem<T = any> {
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/** 缓存数据 */
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data: T;
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/** 缓存时间戳 */
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timestamp: number;
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/** 缓存过期时间(毫秒) */
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ttl: number;
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}
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/**
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* 扣子 API 服务配置
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*/

config/cspell.json

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"language": "en",
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"globRoot": "../",
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"words": [
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"vsize",
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"ksize",
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"1",
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"24",
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"addgroup",

package.json

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"json5": "^2.2.3",
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"json5-writer": "^0.2.0",
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"jsonc-parser": "^3.3.1",
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"node-cache": "^5.1.2",
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"node-fetch": "2",
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"ora": "^8.2.0",
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"pino": "^8.0.0",

pnpm-lock.yaml

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