Offer a script to switch to WAL mode

.gitignore

@@ -2,4 +2,4 @@ node_modules
 config.js
 registration.yaml
 coverage
-db/ooye.db
+db/ooye.db*

readme.md

@@ -51,6 +51,8 @@ Only necessary data and columns are queried from the database. We only contact t
 
 File uploads (like avatars from bridged members) are checked locally and deduplicated. Only brand new files are uploaded to the homeserver. This saves loads of space in the homeserver's media repo, especially for Synapse.
 
+Switching to [WAL mode](https://www.sqlite.org/wal.html) could improve your database access speed even more. Run `node scripts/wal.js` if you want to switch to WAL mode.
+
 # Setup
 
 If you get stuck, you're welcome to message @cadence:cadence.moe to ask for help setting up OOYE!

scripts/wal.js

@@ -0,0 +1,6 @@
+// @ts-check
+
+const sqlite = require("better-sqlite3")
+const db = new sqlite("db/ooye.db", {fileMustExist: true})
+db.pragma("journal_mode = wal")
+db.close()