Manage Multi-Tenancy in Arangojs

arangodb.js

// initialize
// The maximum number of requests is equal to 
// maxSockets * 2 with keepAlive: true or equal to maxSockets with keepAlive: false.
const arangodb = new Arangojs.Database({
  url: "http://localhost:8529", // Base URL of the ArangoDB server or list of server URLs.
  agentOptions: {
    maxSockets: 100,
    keepAlive: true
  }, 
  loadBalancingStrategy: 'ROUND_ROBIN'
})
  
// In your request handler you can set the correct database
// Any request is queued in form of command pattern https://github.com/arangodb/arangojs/blob/master/src/connection.ts#L269
// Due to the fact that node.js is single threaded and the item is pushed synchronously to the queue we don't have to worry about race conditions.
// We will use one connection: https://github.com/arangodb/arangojs/blob/master/src/database.ts#L50
async function handler(req, resp) {
  let db = arangodb.useDatabase('testDb')
  await db.listDatabases()
  await db
    .query({
      query: "RETURN @value",
      bindVars: { value: now }
    })
}