Description

Simple REST event store built with Nest framework.

Event store
Nest framework
Example event sourcing service

Performance

(via rest)
(MacBook Pro 13-inch, M1, 2020)
(100k events ~ 30mb in json format)

Insert (no transactions or bulk operations)
100k events = 4.2mins ~ 2.1ms / event

Query (page size = 500)
100k events = 16s = 0.16ms / event

Installation

$ yarn install

Environment Configuration

EVENT_STORE_MIKRO_ORM_TYPE=mysql 
EVENT_STORE_MIKRO_HOST=localhost
EVENT_STORE_MIKRO_ORM_DB_NAME=event-store
EVENT_STORE_MIKRO_ORM_USER=root
EVENT_STORE_MIKRO_ORM_PASSWORD=
EVENT_STORE_MIKRO_ORM_DEBUG=0

Running the app

# development
$ yarn run start

# watch mode
$ yarn run start:dev

# production mode
$ yarn run start:prod

Test

# unit tests
$ yarn run test

# e2e tests
$ yarn run test:e2e

# test coverage
$ yarn run test:cov

Nest CLI Commands

# generate resource 
$ nest generate resource cat

# generate resource 
$ nest generate module cat

# generate controller 
$ nest generate controller cat

# generate service 
$ nest generate service cat