![]() ![]() On the Common Runtime, routers limit the number of concurrent requests per app. Request concurrencyĮach router maintains an internal per-app request counter. In cases where there are a large number of dynos, the algorithm may optionally bias its selection towards dynos resident in the same AWS availability zone as the router making the selection. Routers use a random selection algorithm for balancing HTTP requests across web dynos. HTTP 1.0 compatibility is also maintained. The routers are responsible for determining the location of your application’s web dynos and forwarding the HTTP request to one of these dynos.Ī request’s unobfuscated path from the end-client through the Heroku infrastructure to your application allows for full support of HTTP 1.1 features such as chunked responses, long polling, websockets, and using an async webserver to handle multiple responses from a single web process. From here they are passed directly to a set of routers. Inbound requests are received by a load balancer that offers SSL termination. This article provides a detailed reference of how the router behaves, and how it conforms to the HTTP specification. ![]() The entry point for all applications on the Common Runtime stack is the domain which offers a direct routing path to your web dynos. The Heroku platform automatically routes HTTP requests sent to your app’s hostname(s) to your web dynos. Available Cipher Suites on the Common Runtime.Dyno connection behavior in Private Spaces. ![]() Dyno connection behavior on the Common Runtime.
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