Example how to set custom mapper and default write policy

example.js

const Session = require('express-session')
const AerospikeStore = require('aerospike-session-store')(Session)
const Aerospike = require('aerospike')

const writePolicy = new Aerospike.WritePolicy({ key: Aerospike.policy.key.SEND })
const clientConfig = new Aerospike.Config({ policies: { write: writePolicy } })
const client = Aerospike.client(clientConfig)
client.connect().catch(error => { throw error })

const mapper = {
  toRecord: session => {
    return {
      session: JSON.stringify(session),
      mobileNumber: session.mobileNumber,
      userId: session.userId
    }
  },
  fromRecord: record => JSON.parse(record.session)
}

const store = new AerospikeStore({
  client: client,
  mapper: mapper
})

let sid = 12345
let session = {
  name: 'jan',
  mobileNumber: '+654321',
  userId: 98765
}
store.set(sid, session, error => {
  if (error) throw error

  const key = new Aerospike.Key(store.as_namespace, store.as_set, sid)
  store.client.get(key, (error, record) => {
    if (error) throw error
    console.info('Record:', record)

    store.get(sid, (error, session) => {
      if (error) throw error

      console.info('Session:', session)
      store.close()
    })
  })
})