groupcache-example

The project is built on top of of groupcache-db-experiment with etcd support.

This project simulates a scenario wherein a few frontends running groupcache are fronting a slow database. For more detail, See capotej blog post about it for more details.

Getting it running

The following commands will set up this topology:

Build everything

1. git clone git@github.com:senarukana/groupcache-example
2. sh build.sh

Start etcd

The default port of etcd is 4001

Start DB server

1. cd dbserver && ./dbserver

This starts a delibrately slow k/v datastore on :8000

Start Multiple Frontends

1. cd cacheserver
2. ./cacheserver -port 8001
3. ./cacheserver -port 8002
4. ./cacheserver -port 8003 You could use -etcd-addresses to assign the port of your etcd server.

Use the CLI to set/get values

SET; Set the data to db CGET: Get the data from the groupcache GET: Get the data from db

1. cd cli
2. ```./cli set foo bar``
3. ./cli get foo should see bar in 300 ms
4. ./cli cget foo should see bar in 300ms (cache is loaded)
5. ./cli cget foo should see bar instantly

More Scenario

See capotej blog post for more details.