Overview
Direct Answer
A reverse proxy is an intermediary server positioned between clients and backend application servers that intercepts incoming requests and distributes them to appropriate upstream servers. Unlike a forward proxy, which shields clients, a reverse proxy shields and manages backend infrastructure.
How It Works
Client requests arrive at the reverse proxy's public address; the proxy then forwards these requests to one or more backend servers based on configured routing rules, load-balancing algorithms, or content inspection. The proxy collects responses from backend servers and returns them to clients, often caching content or modifying headers transparently.
Why It Matters
Organisations deploy reverse proxies to achieve load distribution across multiple servers, improve application resilience through failover mechanisms, reduce backend server exposure to external threats, and accelerate content delivery via caching. This architecture enables horizontal scaling and simplifies SSL/TLS termination at the network edge.
Common Applications
Reverse proxies serve as API gateways routing requests to microservices, distribute web traffic across clustered application servers, protect internal systems in e-commerce and SaaS platforms, and manage request routing in content delivery networks. Common deployment scenarios include multi-region failover and session persistence for stateful applications.
Key Considerations
Reverse proxies introduce a single point of failure if not configured redundantly and require careful tuning of timeouts and connection pooling to avoid backend exhaustion. Practitioners must balance performance gains against added latency and complexity in monitoring distributed request paths.
More in Networking & Communications
IPv6
Protocols & StandardsThe most recent version of the Internet Protocol, providing a vastly larger address space than IPv4.
Computer Network
Protocols & StandardsA collection of interconnected computing devices that share resources and communicate using standardised protocols.
Subnet
Protocols & StandardsA logical subdivision of an IP network that improves security and performance by segmenting traffic.
Packet Sniffing
Protocols & StandardsThe process of capturing and analysing data packets travelling across a network for monitoring or troubleshooting.
DHCP
Protocols & StandardsDynamic Host Configuration Protocol — automatically assigns IP addresses and network configuration to devices.
Throughput
Protocols & StandardsThe actual rate of successful data transfer across a network in a given time period.
SSL/TLS
Protocols & StandardsSecure Sockets Layer/Transport Layer Security — cryptographic protocols providing secure communication over a computer network.
Network Orchestration
Protocols & StandardsThe automated coordination and management of network resources, services, and policies across infrastructure.