Caravan DB

Caravan is a set of in-process message streaming tools for Go applications. Think "Kafka", but for the internal workings of your software. Caravan DB includes features for managing Relational Tables and Indexes.

This is a work in progress. Not at all ready to be used for any purpose

Introduction

Caravan DB is a "Database as a Function." What this means is that the database manages a single persistent data structure exposed via a transactor function. The transactor function will invoke a provided query and automatically return a new version of the database if that query is successful.

For example:

package main

import (
  "github.com/caravan/db"
  "github.com/caravan/db/column"
  "github.com/caravan/db/database"
)

func main() {
  empty := db.NewDatabase()
  stuff, _ := empty(func(d database.Database) error {
    tbl, _ := d.CreateTable("some-table",
      column.Make("first_name"),
      column.Make("last_name"),
    )

    _ = tbl.CreateIndex(db.StandardIndex, "full-name",
      "last_name", "first_name",
    )
    return nil
  })
}

The variable empty will point to the original empty database, whereas the variable stuff will point to a new version of the database that contains a table called "some-table".