[Node.js] Elasticsearch search latency degrades over time (within hours)

Elastic Stack Elasticsearch
10

I would recommend using the official client instead of Axios. You can configure a custom keep-alive agent easily:

const { Client } = require('elastic/elasticsearch')
const Agent = require('agentkeepalive').HttpsAgent
const client = new Client({
  cloud: { id: 'id' },
  auth: { username: 'username', password: 'password' },
  agent () {
    return new Agent({
      timeout: 500,
      maxFreeSockets: 10,
      maxSockets: 100,
      freeSocketTimeout: 500,
      socketActiveTTL: 1000 * 60 * 10
    })
  }
})

Regarding the queue system, I would recommend using p-queue instead.