From 33229e38a910e26083175a3e272278745378114c Mon Sep 17 00:00:00 2001
From: Adam Soltys <asoltys@gmail.com>
Date: Tue, 17 Jan 2023 16:05:00 -0800
Subject: redlock

---
 lib/db.js | 24 ++++--------------------
 1 file changed, 4 insertions(+), 20 deletions(-)

(limited to 'lib/db.js')

diff --git a/lib/db.js b/lib/db.js
index c21e224f..fb99a756 100644
--- a/lib/db.js
+++ b/lib/db.js
@@ -1,25 +1,9 @@
-import { createClient } from "redis";
-
-export const db = createClient({ url: "redis://db" });
-
-db.on("error", err => console.log("db error", err));
-
-await db.connect();
+import { Redis } from "ioredis";
+import Redlock from "redlock";
 
+export const db = new Redis("redis://db", { enableAutoPipelining: true });
 export default db;
 
 export let g = async k => JSON.parse(await db.get(k));
 export let s = (k, v) => db.set(k, JSON.stringify(v));
-
-let retries = {};
-export let t = async (k, f) => {
-  retries[k] = retries[k] ? retries[k]++ : 0;
-  await db.watch(k);
-  let o = f(await g(k));
-  let m = await db.multi();
-  await s(k, o);
-
-  if (retries[k] < 10) {
-    if (!(await m.exec())) setTimeout(() => t(k, f), 100);
-  } else throw new Error("could not obtain lock");
-};
+export let t = (f) => new Redlock([db]).using([db], 5000, f);
-- 
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