Examples

This is a repository for micro examples. Feel free to contribute.

Most likely needed examples

service - A sample micro service
greeter - A complete greeter example
booking - A demo end to end application

Other

api - Provides API usage examples
booking - A booking.com demo application
broker - A example of using Broker for Publish and Subscribing.
client - Usage of the Client package to call a service.
command - An example of bot commands as micro services
config - Using Go Config for dynamic config
event - Using the API Gateway event handler
filter - Filter nodes of a service when requesting
flags - Using command line flags with a service
form - How to parse a form behind the micro api
function - Example of using Function programming model
getip - Get the local and remote ip from metadata
graceful - Demonstrates graceful shutdown of a service
greeter - A complete greeter example (includes python, ruby examples)
heartbeat - Make services heartbeat with discovery for high availability
helloworld - Hello world using micro
kubernetes - Examples of using the k8s registry and grpc
metadata - Extracting metadata from context of a request
mocking - Demonstrate mocking helloworld service
noproto - Use micro without protobuf or code generation, only go types
options - Setting options in the go-micro framework
plugins - How to use plugins
pubsub - Example of using pubsub at the client/server level
grpc - Examples of how to use go-micro/service/grpc
redirect - An example of how to http redirect using an API service
roundrobin - A stateful client wrapper for true round robin of requests
secure - Demonstrates use of transport secure option for self signed certs
server - Use of the Server package directly to server requests.
service - Example of the top level Service in go-micro.
sharding - An example of how to shard requests or use session affinity
shutdown - Demonstrates graceful shutdown via context cancellation
stream - An example of a streaming service and client
template - Api, web and srv service templates generated with the 'micro new' command
tunnel - How to use connection tunneling with the tunnel package
waitgroup - Demonstrates how to use a waitgroup with a service
wrapper - A simple example of using a log wrapper

Community

Find contributions from the community via the explorer

go-shopping - A sample product with a suite of services
shippy - A multi app demo and tutorial
services - The home of Micro services

Service Discovery

All services require service discovery. The default is multicast DNS, a zeroconf system.

If you need something multi-host or more resilient use etcd.

# install
go get -v go.etcd.io/etcd

# run
etcd

Use env var MICRO_REGISTRY=etcd to enable the etcd registry.

Protobuf

Protobuf is used for code generation of message types and client/hander stubs.

If making changes recompile the protos.

Install

Install protoc for your environment. Then:

go get github.com/golang/protobuf/{proto,protoc-gen-go}

go get github.com/micro/micro/v2/cmd/protoc-gen-micro@master

Compile Proto

protoc --proto_path=$GOPATH/src:. --micro_out=. --go_out=. path/to/proto

warrenwx/examples