From 10e4b19f40de608b13f7e364d9abd374549a99b6 Mon Sep 17 00:00:00 2001
From: SukkaW <isukkaw@gmail.com>
Date: Sat, 6 Jan 2024 23:25:04 +0800
Subject: [PATCH] Perf: add cache to user-agent list

---
 Build/build-speedtest-domainset.ts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/Build/build-speedtest-domainset.ts b/Build/build-speedtest-domainset.ts
index a94415a2..f1346a1f 100644
--- a/Build/build-speedtest-domainset.ts
+++ b/Build/build-speedtest-domainset.ts
@@ -16,8 +16,17 @@ import { TTL, deserializeArray, fsCache, serializeArray } from './lib/cache-file
 
 const s = new Sema(2);
 
-const latestTopUserAgentsPromise = fetchWithRetry('https://unpkg.com/top-user-agents@latest/src/desktop.json')
-  .then(res => res.json<string[]>()).then(userAgents => userAgents.filter(ua => ua.startsWith('Mozilla/5.0 ')));
+const latestTopUserAgentsPromise = fsCache.apply(
+  'https://unpkg.com/top-user-agents@latest/src/desktop.json',
+  () => fetchWithRetry('https://unpkg.com/top-user-agents@latest/src/desktop.json')
+    .then(res => res.json<string[]>())
+    .then(userAgents => userAgents.filter(ua => ua.startsWith('Mozilla/5.0 '))),
+  {
+    serializer: serializeArray,
+    deserializer: deserializeArray,
+    ttl: TTL.ONE_DAY()
+  }
+);
 
 const querySpeedtestApi = async (keyword: string): Promise<Array<string | null>> => {
   const topUserAgents = await latestTopUserAgentsPromise;