revert: "perf: use only one WASM alloc for xxhash"

This reverts commit 01ecdd48d0.

lib/api/route/status.ts

@@ -4,8 +4,6 @@ import xxhash from 'xxhash-wasm';
 
 import cacheModule from '@/utils/cache/index';
 
-const xxhashPromise = xxhash();
-
 const QuerySchema = z.object({
     requestPath: z.string().openapi({
         param: {
@@ -64,7 +62,7 @@ const handler: RouteHandler<typeof route> = async (ctx) => {
     }
 
     const { requestPath } = ctx.req.valid('query');
-    const { h64ToString } = await xxhashPromise;
+    const { h64ToString } = await xxhash();
     const key = 'rsshub:koa-redis-cache:' + h64ToString(requestPath + ':rss');
     const cached = await cacheModule.globalCache.has(key);
 

lib/middleware/cache.ts

@@ -7,8 +7,6 @@ import type { Data } from '@/types';
 import cacheModule from '@/utils/cache/index';
 
 const bypassList = new Set(['/', '/robots.txt', '/logo.png', '/favicon.ico']);
-
-const xxhashPromise = xxhash();
 // only give cache string, as the `!` condition tricky
 // XXH64 is used to shrink key size
 // plz, write these tips in comments!
@@ -21,7 +19,7 @@ const middleware: MiddlewareHandler = async (ctx, next) => {
     const requestPath = ctx.req.path;
     const format = `:${ctx.req.query('format') || 'rss'}`;
     const limit = ctx.req.query('limit') ? `:${ctx.req.query('limit')}` : '';
-    const { h64ToString } = await xxhashPromise;
+    const { h64ToString } = await xxhash();
     const key = 'rsshub:koa-redis-cache:' + h64ToString(requestPath + format + limit);
     const controlKey = 'rsshub:path-requested:' + h64ToString(requestPath + format + limit);
 

lib/routes/economist/espresso.ts

@@ -11,8 +11,6 @@ import { parseDate } from '@/utils/parse-date';
 
 const link = 'https://www.economist.com/the-world-in-brief';
 
-const xxhashPromise = xxhash();
-
 export const route: Route = {
     path: '/espresso',
     categories: ['traditional-media'],
@@ -39,7 +37,7 @@ export const route: Route = {
 };
 
 async function handler() {
-    const { h64ToString } = await xxhashPromise;
+    const { h64ToString } = await xxhash();
     const nextData = await cache.tryGet(
         link,
         async () => {