## Understanding ArgoCD Reconciliation: How It Works, Why It Matters, and Best Practices

[ArgoCD](https://argo-cd.readthedocs.io/en/stable/) is a powerful GitOps controller for Kubernetes, enabling declarative configuration and automated synchronization of workloads. One of its core functions is **reconciliation**, a continuous process by which ArgoCD ensures that the live state of a Kubernetes cluster matches the desired state defined in a Git repository.

While this might sound straightforward, reconciliation plays a critical role in the GitOps lifecycle, and its default behavior can be surprisingly aggressive. In this blog post, we’ll explore:

- What reconciliation in ArgoCD actually does
- Why it exists and how it ensures cluster integrity
- The pitfalls of the default timer
- Best practices for tuning reconciliation to balance responsiveness and resource efficiency

In a related [**blog**](https://docs.rafay.co/blog/2025/08/05/drift-prevention-vs-detection-does-a-polling-approach-make-sense-at-scale/), we describe how customers using Rafay are able to **Block Drift** in the first place.