good version of LRU

observablehq · Jan 26, 2023 · 2c461c0 · 2c461c0
1 parent b541e5c
commit 2c461c0
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Showing 3 changed files with 18 additions and 6 deletions.
diff --git a/lib/pools.js b/lib/pools.js
@@ -1,14 +1,14 @@
 import LRU from "lru-cache";
 import * as Sentry from "@sentry/node";
 
-const ttl = 1000 * 60 * 10; // 10m
+const maxAge = 1000 * 60 * 10; // 10m
 
 export default class Pools {
   constructor(createPool) {
     this.createPool = createPool;
     this.cache = new LRU({
       max: 100,
-      ttl,
+      maxAge,
       updateAgeOnGet: true,
       dispose(_key, pool) {
         pool.end();
@@ -17,8 +17,8 @@ export default class Pools {
 
     let loop;
     (loop = () => {
-      this.cache.purgeStale();
-      this.timeout = setTimeout(loop, ttl / 2);
+      this.cache.prune();
+      this.timeout = setTimeout(loop, maxAge / 2);
     })();
   }
 
@@ -45,7 +45,7 @@ export default class Pools {
   }
 
   del(credentials) {
-    this.cache.delete(JSON.stringify(credentials));
+    this.cache.del(JSON.stringify(credentials));
   }
 
   end() {

diff --git a/package.json b/package.json
@@ -22,7 +22,7 @@
     "@sentry/node": "^7.33.0",
     "JSONStream": "^1.3.5",
     "ajv": "^8.11.0",
-    "lru-cache": "^7.14.1",
+    "lru-cache": "^6.0.0",
     "micro": "^9.3.4",
     "mssql": "^9.0.1",
     "mysql2": "^3.0.1",

diff --git a/yarn.lock b/yarn.lock
@@ -3619,6 +3619,13 @@ lru-cache@^5.1.1:
   dependencies:
     yallist "^3.0.2"
 
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
 lru-cache@^7.14.1:
   version "7.14.1"
   resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-7.14.1.tgz#8da8d2f5f59827edb388e63e459ac23d6d408fea"
@@ -5756,6 +5763,11 @@ yallist@^3.0.2:
   resolved "https://registry.yarnpkg.com/yallist/-/yallist-3.1.1.tgz#dbb7daf9bfd8bac9ab45ebf602b8cbad0d5d08fd"
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
 
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
+
 [email protected]:
   version "20.2.4"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-20.2.4.tgz#b42890f14566796f85ae8e3a25290d205f154a54"