ketchapp

Pet project for yet another pomodoro app :) - cloud-first microservices demo application.

Prerequisites

• Docker
• kubectl
• Java JDK
• Maven

Technologies used:

• Java
• gRPC
  • Unit tests
  • Deadlines
  • Error handling (TBD)
  • Logging interceptor
  • Cancellation (TBD)
  • Health checks (TBD)
  • Tracing (Jaeger?) (TBD)
  • Metrics (TBD)
  • Load balancing (TBD)
  • Sagas (TBD)
  • mTLS (TBD)
  • Authentication (TBD)
• Docker
  • Multi-stage build (builder image, RecordService image)

Plans include following technologies into this project:

• Go (Go microservice, Go CLI)
• Kubernetes
• Skaffold or Helm
• Istio
• Monitoring (Stackdriver?)

Architecture (planned, work in progress)

                                      +--------------+
                                      |Web/App client|
                                      +------+--+----+
                                             |  |
                                             |  |
            +---------------+                |  |
            |Event Service  +----------------+  +--------------------+--------------+
            +--+---------+--+                                        |              |
               |         |                                           |              |
               |         +-------------------+                       |              |
               |         |                   |                       |              |
   +-----------+--+  +---+---------+  +------+-------------+  +------+-----+  +-----+------+
   |Record Service|  |Stats Service|  |Achievements Service|  |User Service|  |Tags Service|
   +------+-------+  +------+------+  +---------+----------+  +------+-----+  +------+-----+
          |                 |                   |                    |               |
          |                 |                   |                    |               |
     +----+----+       +----+---+       +-------+-------+        +---+---+       +---+---+
     |Record DB|       |Stats DB|       |Achievements DB|        |User DB|       |Tags DB|
     +---------+       +--------+       +---------------+        +-------+       +-------+

See this README.md for details.

Building Docker images manually

From the project root folder:

docker build -t ketchapp/app:latest .

cd microservices/recordservice
docker build -t ketchapp/recordservice:latest .

cd ../statsservice
docker build -t ketchapp/statsservice:latest .

cd ../eventservice
docker build -t ketchapp/eventservice:latest .

cd ../achievementservice
docker build -t ketchapp/achievementservice:latest .