Rename PostgreSQL table prefix from wp_ to webpush_

server/server.yml

@@ -38,6 +38,12 @@
 #
 # firebase-key-file: <filename>
 
+# If "database-url" is set, ntfy will use PostgreSQL for database-backed stores instead of SQLite.
+# Currently this applies to the web push subscription store. Message cache and user manager support
+# will be added in future releases. When set, the "web-push-file" option is not required.
+#
+# database-url: "postgres://user:pass@host:5432/ntfy"
+
 # If "cache-file" is set, messages are cached in a local SQLite database instead of only in-memory.
 # This allows for service restarts without losing messages in support of the since= parameter.
 #