> ## Documentation Index > Fetch the complete documentation index at: https://docs.startree.ai/llms.txt > Use this file to discover all available pages before exploring further. # ThirdEye Architecture **High level system architecture of ThirdEye**

architecture ThirdEye Architecture

Building blocks ### UI This is the service that serves the web interface. It communicates with the backend. ### Coordinator The **Coordinator** is the entry point of the REST API. The request are (optionally) authenticated and authorized. The coordinator can perform CRUD operations on ThirdEye entities, simulate detection pipeline, and run interactive RCA. ### Scheduler The **Scheduler** runs the task crons and create the task objects. The tasks are persisted in the database and polled by the workers. The 2 main type of tasks are detection tasks and notification tasks. ### Worker **Workers** run the tasks. Here is the execution principle: * workers wait for tasks to be added to the queue * once a worker finds a new task, it assigns it to itself (gets a lock) * on successfully getting a lock, the worker executes the task * upon completion, the worker captures the results and persists them into the db ## Notes UI, coordinator, and worker can be scaled independently based on their respective load. The scheduler is not replicated.