@dashevo/dapi-db-counterstore

orbit-db-counterstore

A simple counters database. Useful for example counting events separate from data.
Used in orbit-db.

Install

npm install orbit-db ipfs

First, create an instance of OrbitDB:

const IPFS = require('ipfs')
const OrbitDB = require('orbit-db')

const ipfs = new IPFS()
const orbitdb = new OrbitDB(ipfs)

Get a log database and add an entry to it:

const counter = orbitdb.counter('visitors')
counter.inc()
console.log(counter.value)
// 1
counter.inc(4)
console.log(counter.value)
// 5

Later, when the database contains data, load the history and query when ready:

const counter = orbitdb.counter('visitors')
counter.events.on('ready', () => {
  counter.inc()
  console.log(counter.value)
  // 6
})

See example/index.html for a detailed example. Note that to run this example, you need to have a local IPFS daemon running at port 5001.