readme: clarify that $REDIS_URL is optional 📝

db-rest equivalent: derhuerst/db-rest@d53ff22
derhuerst · Jan 26, 2024 · 45a6d08 · 45a6d08
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commit 45a6d08
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/README.md b/README.md
@@ -14,7 +14,9 @@
 
 ## installing & running
 
-`vbb-rest` expects a [Redis](https://redis.io/) server running on `127.0.0.1:6379` (default port), but you can set the `REDIS_URL` environment variable to change this.
+### access to Redis
+
+It is recommended that you let `bvg-rest` cache HAFAS responses within a [Redis](https://redis.io/) cache. To use this feature, set `$REDIS_URL` (e.g. to `redis://localhost:6379/1` when running Redis locally).
 
 ### via Docker