Queue-it KnownUser Server-Side Connector

SDK for integrating Queue-it's queue management into JavaScript server-side applications, enabling request validation and redirect logic to protect backend services during traffic spikes. Current stable version is 3.7.12, released on npm and maintained by Queue-it. Key differentiators: supports Express, provides AJAX redirect handling, uses integration configuration for trigger matching. Requires Node.js v8.12+. Ships TypeScript types.