Doc updates

Author: hiett

README.md

@@ -1,11 +1,43 @@
 # SRH: Serverless Redis HTTP
-A redis connection pooler for serverless applications. This allows your serverless functions to talk to Redis via HTTP,
+A Redis connection pooler for serverless applications. This allows your serverless functions to talk to Redis via HTTP,
 while also not having to worry about the Redis max connection limits.
 
-Totally open source so you still own the data - run it with your own Redis server.
+The idea is you host this alongside your Redis server, so minimise latency. The serverless functions can then talk to 
+this via HTTP.
 
-I will also offer some kinda SaaS version when it's a bit more done ;) - but still BYOR (bring your own Redis)!
+## Features
+- Allows you to talk to redis via HTTP
+- Pools redis connections
+- Automatically kills redis connections after inactivity
+- Supports multiple redis instances, and you can configure unique tokens for each
+- Fully supports the `@upstash/redis` TypeScript library.
 
-Don't use this yet - it's still in development.
+## Client usage
+This will not work with regular Redis clients, as it is over HTTP and not the redis protocol.
+However, to try and keep the project as "standardised" as possible, you can use the `@upstash/redis` TypeScript library.
+You can read about it here: [Upstash Redis GitHub](https://github.com/upstash/upstash-redis)
 
-Also, it's totally compatible with the Upstash Redis Client SDKs.
+Soon I will add specific documentation for the endpoints so you can implement clients in other languages.
+
+## Installation
+Soon, I will provide a Docker container for this. Right now, you need Elixir 1.13+ installed. Clone down the repo, then run:
+`mix deps.get`
+then
+`iex -S mix`
+
+To configure Redis targets:\
+Create a file: `srh-config/tokens.json`
+```json
+{
+    "example_token": {
+        "srh_id": "some_unique_identifier",
+        "connection_string": "redis://localhost:6379",
+        "max_connections": 3
+    } 
+}
+```
+Notes: 
+- Srh_id can be anything you want, as long as it's a string, and unique.
+- `max_connections` is the maximum number of connections for the pool.
+  - If there is inactivity, the pool will kill these connections. They will only be open while the pool is alive. The pool will re-create these connections when commands come in.
+- You can add more redis instances to connect to by adding more tokens and connection configurations. Based on the header in each request, the correct pool/connection info will be used.