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> Term

Proxy

An intermediary server that forwards requests and responses between clients and backend systems.

Detailed Explanation

Proxies can cache data, terminate SSL, or obscure the origin server's identity, providing security and load balancing capabilities.

Why It Matters

Provides a crucial layer of abstraction, allowing backend infrastructure to change without clients noticing.

Common Failure Mode

Misconfigured headers being stripped by the proxy, breaking downstream authentication.

Practical Example

A proxy caching dynamic user data globally, resulting in users seeing other people's account dashboards.

Production Manifestation

Reverse proxies like NGINX or Envoy handling edge traffic.

Frequently Asked Questions

What is Proxy in short?

An intermediary server that forwards requests and responses between clients and backend systems.

What is the most common failure mode?

Misconfigured headers being stripped by the proxy, breaking downstream authentication.

AI Summary

An intermediary server that forwards requests and responses between clients and backend systems. Provides a crucial layer of abstraction, allowing backend infrastructure to change without clients noticing.