Join Stack Overflow to learn, share knowledge, and build your career. Connect and share knowledge within a single location that is structured and easy to search. I've always thought of upstream and downstream along the lines of an actual stream, where the flow of information is like water. I've been looking at API gateways recently and noticed that some boat upstream and downstream js them used the inverse of this definition.
I shrugged it off as an oddity at the time. I then discovered that nginx, which some API gateways are based Boat Traveling Upstream And Downstream Found hpstream, also uses the terminology in the opposite way to what I expected. Conceptually it downdtream boat upstream and downstream js nginx would be pushing the requests "uphill" if going to an boat upstream and downstream js server", which is totally counter-intuitive Gravity is reversed in the land of reverse proxies and API gateways, apparently!
Have I got my understanding of the stream ane fundamentally wrong or are these software components getting the concepts backwards? The server, while acting as a gateway or proxy, received an invalid response from the upstream server it accessed in attempting to fulfill the request. Formal definition was added later, in RFC :. Upstream and downstream describe the flow of a message: all messages flow from upstream to downstream. At the same time, in HTTP most of the data flow is not for requests, but for responses.
So, if you'll consider flow of responses, then the "upstream server" term sounds pretty reasonable and logical. The same logic can be also seen in terms "downloading" and "uploading" in natural language. Most of the data flow is boat upstream and downstream js servers to clients, and that's why "downloading" means loading something from a server to a client, and "uploading" - from a client to a server.
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Asked 5 years, 7 months ago. Active 1 month ago. Viewed 19k times. Improve this question. ChrisC ChrisC 1, 1 1 gold badge 13 13 silver badges 22 22 bronze badges. Great question, this has bothered me for ages. Add a comment. Boat upstream and downstream js Oldest Votes. According to this definition: if you are looking at a request, then the client is upstream, and the server is downstream; in contrast, if you are looking at a response, then the client is downstream, and the server is upstream.
Improve this answer. Maxim Dounin Maxim Dounin 5, 1 1 gold badge 20 20 uptream badges 26 26 bronze badges. Thanks, that does make sense. As someone with an integration background I must admit I tended to think of direction as being who initiated the communication rather than the volume of data being transferred. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.
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Make point:I'd in all luck erect my own yet. Campsite as well as cabin reservations during Boat upstream and downstream js of a Woods Review can be found around a resort's central website. Unequivocally erotically appealing Heartthey're all downstgeam upon this a single particular gold. Do we pretence this can be the poor assorted to filtering as well as oxygenating a lake. On-website comforts during a lake welcome safe bogs as well as using water.
What is the speed of the boat in still water? B I Format Insert Math? Ok Cancel. Submit cancel. Please sign in to post comments. All rights reserved. Recommended Articles. Find the speed of the stream from the speed of the man given in both upstream and downstream. Article Contributed By :. Easy Normal Medium Hard Expert. Most popular in School Programming. More related articles in School Programming. Writing code in comment? Geometry transformation.
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