Description

Deploys components of an application into a separate process or container to provide isolation and encapsulation. This allows you to attach functionality like logging, monitoring, or networking to a service without changing the service code.

Where to use

• Service Mesh (Istio/Linkerd).
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• Centralized logging agents.
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• SSL termination.

Real World Example

A Kubernetes Pod contains two containers: the Node.js API (Main) and Envopy Proxy (Sidecar). All network traffic flows through Envoy.

Code Example

# Code Concept for Sidecar Pattern
# This pattern is architectural.

class Service:
    def execute(self):
        # Implementation logic
        pass