go-spanner-example

Try Cloud Spanner and emulators. We will look into the development environment and CRUD in anticipation of the need for Cloud Spanner in the future. At this time, for us, Cloud Spanner is expensive. To keep development costs low, emulators are used.

flowchart LR
    docker["`docker
    emulator`"]
    devcontainer["`devcontainer
    Go`"]
    devcontainer -->|host.docker.internal:9020| docker

Usage

• Start emulator.

docker pull gcr.io/cloud-spanner-emulator/emulator
docker run -p 9010:9010 -p 9020:9020 gcr.io/cloud-spanner-emulator/emulator

curl http://host.docker.internal:9020

export SPANNER_EMULATOR_HOST=host.docker.internal:9010
echo $SPANNER_EMULATOR_HOST

curl --header "Content-Type: application/json" --data '{"singerId": 10}'     http://localhost:8080/singer.v1.SingerService/Singer

Reference

• Cloud Spanner Emulator