dcache/README.md

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2023-12-31 01:56:53 +05:30
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# dcache: Distributed, Highly Available cache implementation for mCaptcha
## Overview
- Uses Raft consensus algorithm via [openraft](https://crates.io/crates/openraft)
- GRPC via [tonic](https://crates.io/crates/tonic)
## Tips
We recommend running at least three instances of dcache in your
deployment.
**NOTE: Catastrophic failure will occur when n/2 + 1 instances are
down.**
## Usage
## Firewall configuration
dcache uses a single, configurable port for both server-to-server and client-to-server
communications. Please open that port on your server.
## Launch
```bash
dcache --id 1 \
--http-addr 127.0.0.1:9001 \
--introducer-addr 127.0.0.1:9001 \
--introducer-id 1 \
--cluster-size 3
```
### Options
| Name | Purpose |
| ----------------- | ----------------------------------------------------------- |
| --id | Unique integer to identify node in network |
| --http-addr | Socket address to bind and listen for connections |
| --introducer-addr | Socket address of introducer node; required to join network |
| --intdocuer-id | ID of the introducer node; required to join network |
| --cluster-size | Total size of the cluster |