RSSHub/lib/middleware/debug.ts

import { MiddlewareHandler } from "hono";
import { getDebugInfo, setDebugInfo } from "@/utils/debug-info";

const middleware: MiddlewareHandler = async (ctx, next) => {
    {
        const debug = getDebugInfo();
        debug.request++;
        setDebugInfo(debug);
    }

    await next();

    {
        const debug = getDebugInfo();
        if (ctx.res.headers.get('X-Koa-Redis-Cache') || ctx.res.headers.get('X-Koa-Memory-Cache')) {
            debug.hitCache++;
        }

        if (ctx.res.status === 304) {
            debug.etag++;
        }
        setDebugInfo(debug);
    }
};

export default middleware;