httpMaximumConnectionsPerHost

HttpMaximumCon... is not a standard term; in practice it refers to the maximum number of concurrent HTTP connections that a client or server will maintain. This limit is a key tuning parameter that affects latency, throughput, and resource usage.

On the client side, web browsers limit the number of parallel connections per origin to prevent resource exhaustion and avoid congestion. Historically browsers cap at about six to eight connections per host; modern browsers may adjust this based on network conditions and protocol (HTTP/2 reduces the need for multiple connections).

On the server side, software such as Apache, Nginx, IIS, and application servers expose configurable limits controlling the number of simultaneous connections or workers. Examples: Nginx limit_conn, Apache MaxRequestsPerChild or MaxConnectionsPerChild in older versions, IIS MaxConnections, and Java-based clients' maxConnectionsPerRoute or maxTotalConnections.

With HTTP/1.1, persistent connections were introduced to reuse connections; thus, increasing the number of open connections can help parallelize requests. However, after upgrades to HTTP/2 and HTTP/3, multiplexing allows many requests to share a small number of connections, making per-connection limits less critical and shifting focus to server-side resource limits and fairness.

Practically, administrators tune max-connections to balance throughput and resource use, then validate with load testing, considering CPU, memory, TLS renegotiation, and back-end service capacity.

There is no universal standard named httpMaximumCon..., and the term is used loosely to describe the theme of connection-concurrency in various systems.