Merge pull request #1410 from yamadashy/perf/use-brotli-for-cache-compression

perf(server): Switch cache compression from deflate to Brotli

Author: yamadashy

website/server/src/domains/pack/utils/cache.ts

@@ -2,8 +2,11 @@ import { promisify } from 'node:util';
 import * as zlib from 'node:zlib';
 import type { PackOptions } from '../../../types.js';
 
-const inflateAsync = promisify(zlib.inflate);
-const deflateAsync = promisify(zlib.deflate);
+const compressAsync = promisify(zlib.brotliCompress);
+const decompressAsync = promisify(zlib.brotliDecompress);
+
+// Balanced speed/ratio for in-memory cache
+const BROTLI_QUALITY = 4;
 
 interface CacheEntry {
   value: Uint8Array; // Compressed data
@@ -43,7 +46,7 @@ export class RequestCache<T> {
 
     try {
       // Decompress and return the data
-      const decompressedData = await inflateAsync(entry.value);
+      const decompressedData = await decompressAsync(entry.value);
       return JSON.parse(decompressedData.toString('utf8'));
     } catch (error) {
       console.error('Error decompressing cache entry:', error);
@@ -56,7 +59,12 @@ export class RequestCache<T> {
     try {
       // Convert data to JSON string and compress
       const jsonString = JSON.stringify(value);
-      const compressedData = await deflateAsync(Buffer.from(jsonString, 'utf8'));
+      const compressedData = await compressAsync(jsonString, {
+        params: {
+          [zlib.constants.BROTLI_PARAM_MODE]: zlib.constants.BROTLI_MODE_TEXT,
+          [zlib.constants.BROTLI_PARAM_QUALITY]: BROTLI_QUALITY,
+        },
+      });
 
       this.cache.set(key, {
         value: compressedData,