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go-pgsql-elasticsearch

Requirements

  1. Make sure you've installed docker and docker-compose.
  2. Make sure you've installed Go.
  3. Download or clone this Repo.
  4. Postman Collection is in root folder

Codes

The source code for the API and service to update ElasticSearch are in folder go/src/.

Stacks

  1. Programming Language: GOLANG
  2. Database: Postgresql
  3. Full Text Search Engine: ElasticSearch
  4. Container: Docker

Run the code outside the Container

  1. Make sure to install dep.
  2. Run command dep ensure to download the dependencies.
  3. Make sure the container for Database is running.
  4. On folder pkg/configs/db/postgres open file postgres.go.
  5. Change host from database_postgres to `localhost
  6. Change port from 5432 to 5433

Run the code inside contaianer

After you download/clone this Repo, go to dockers folder. Run command docker-compose up --build -d

Access containers

  1. API nginx: localhost:81
  2. Database: localhost:5433
  3. ElasticSearch: localhost:9201

Troubleshoot

If there are some changes made to the code for API

  • Make sure you are in root folder of API (go/src/API)
  • Run command ./build.sh
  • Rebuild the containers by running this command docker-compose up --build -d

Update to ElasticSearch on data change

Steps:

  1. INSERT/UPDATE/DELETE on ads table will trigger a function to add record to delta_update.
  2. It will store ads ID and action with value [add|update|delete].
  3. A service that running in the background will check on table delta_update for every 5 seconds.
  4. It will grab 1000 data and pump to ElasticSearch depend on the action on the row.