张翔
b207bfa7af
test: 添加单元测试和端到端测试 refactor: 重构登录页面和上传模块 ci: 更新测试覆盖率阈值至42% build: 添加测试相关依赖 docs: 更新测试文档 style: 修复代码格式问题
76 lines
2.0 KiB
TypeScript
76 lines
2.0 KiB
TypeScript
export class PerformanceMonitor {
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private static instance: PerformanceMonitor;
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private metrics: Map<string, number[]> = new Map();
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static getInstance(): PerformanceMonitor {
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if (!PerformanceMonitor.instance) {
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PerformanceMonitor.instance = new PerformanceMonitor();
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}
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return PerformanceMonitor.instance;
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}
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recordMetric(name: string, value: number) {
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if (!this.metrics.has(name)) {
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this.metrics.set(name, []);
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}
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this.metrics.get(name)!.push(value);
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if (this.metrics.get(name)!.length > 1000) {
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this.metrics.get(name)!.shift();
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}
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}
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getAverage(name: string): number {
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const values = this.metrics.get(name) || [];
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if (values.length === 0) return 0;
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return values.reduce((a, b) => a + b, 0) / values.length;
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}
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getPercentile(name: string, percentile: number): number {
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const values = this.metrics.get(name) || [];
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if (values.length === 0) return 0;
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const sorted = [...values].sort((a, b) => a - b);
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const index = Math.ceil((percentile / 100) * sorted.length) - 1;
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return sorted[Math.max(0, index)] ?? 0;
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}
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getCount(name: string): number {
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return this.metrics.get(name)?.length || 0;
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}
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getMin(name: string): number {
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const values = this.metrics.get(name) || [];
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if (values.length === 0) return 0;
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return Math.min(...values);
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}
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getMax(name: string): number {
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const values = this.metrics.get(name) || [];
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if (values.length === 0) return 0;
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return Math.max(...values);
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}
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getStats(name: string) {
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return {
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count: this.getCount(name),
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avg: this.getAverage(name),
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min: this.getMin(name),
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max: this.getMax(name),
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p50: this.getPercentile(name, 50),
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p95: this.getPercentile(name, 95),
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p99: this.getPercentile(name, 99),
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};
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}
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clearMetrics(name?: string) {
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if (name) {
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this.metrics.delete(name);
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} else {
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this.metrics.clear();
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}
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}
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}
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export const monitor = PerformanceMonitor.getInstance();
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