github.com/bygui86/go-config-hot-reload

go-config-hot-reload

Explore configuration hot reloading options in Golang

run

file hot reload

# run application
go run ./file-hot-reload/main.go

# wait some seconds to have the application up and running

# edit config.yaml and change values

# pay attention to logs and notice that configurations are different now! 

consul

# start consul
docker run -d --rm --name=consul -e CONSUL_BIND_INTERFACE=eth0 -p 8500:8500 consul

# insert configs in consul
curl --request PUT \
    --data @./consul-reload/config-1.json \
    http://localhost:8500/v1/kv/samples/app

# run application
go run ./consul-reload/main.go

# wait some seconds to have the application up and running

# change a config
curl --request PUT \
    --data @./consul-reload/config-2.json \
    http://localhost:8500/v1/kv/samples/app

# pay attention to logs and notice that configurations are different now!

links

• https://openmymind.net/Golang-Hot-Configuration-Reload/
• https://medium.com/golangspec/sync-rwmutex-ca6c6c3208a0

consul

• https://www.consul.io/docs/connect/native/go
• https://github.com/hashicorp/consul/
• https://pkg.go.dev/github.com/hashicorp/consul
• https://hub.docker.com/_/consul
• https://www.consul.io/api-docs/kv
• https://medium.com/@pinkudebnath/putting-config-into-consul-using-curl-54c702db602

harvester

• https://github.com/beatlabs/harvester
• https://build.thebeat.co/harvester-b3bfa19f16e