Jack, >From what I understand it looks like a conflict of uniquely named files when they are generated simultaneously. Could you resolve this by creating a folder named from the session_id, with the file inside of that. So that if two users request the same file, there will never be a conflict, as the unique file will be created in both folders.
[user_1_session_id]/entry123.jpeg [user_2_session_id]/entry123.jpeg Though, this might seem like a fix, but the issue may be more fundamental than file names. Let me know what you think. Regards, James On Thu, Oct 17, 2019 at 4:23 PM Jack Sundberg <jacksundberg...@gmail.com> wrote: > Yes, I tried getting the idea across in layman terms, as I hope this helps > discussion of the issue -- and then I can later translate the solution into > django implementation. > > I avoided the full process in my original post for clarity. I used the > *.jpeg file as an illustrative example, when I'm actually generating *.gltf > and *.bin files. These files are typically a couple hundred KB in size, but > I will have thousands of them (millions as I add to my database). These > files are used in coordination with Verge3D - an app built on top of > Three.js for 3D rendering. Verge3D allows use of Blender for CAD, which is > a python-based program that my scripts are written in. Running of these > scripts are certainly cpu intensive; however I am going to get around this > by using an <iframe> of this Verge3D request. > > So to be more specific, my app does the following: > - the url mapping pulls a database entry > - the app serves the proper html template with an <iframe> embedded in > it. It displays a loading screen while the 3D model is created backend. > - the <iframe> calls a separate app using the identical data entry > - using the data entry, static files are created from the data (Blender > script creates a *.gltf and *.bin) > - the app serves the html template with the generated static files > embedded inside the <iframe> > > Is this helpful? Also thank you for the quick response. I really > appreciate the help. > > -Jack > > > On Thursday, October 17, 2019 at 10:56:56 AM UTC-4, vineet daniel wrote: >> >> This problem can happen with any stack and shouldn't be considered as >> django specific. What you are looking for is a solution in a layman >> terms.which then can be translated to django implementation. >> >> Before that i would like to know image size and kind of image that you >> create. Is it some qr code or what? >> >> Please note that working with images on the fly is always a cpu intensive >> operation. Ill can come up with something once you share the details with >> me. >> >> On Thu, 17 Oct 2019, 20:00 Jack Sundberg, <jacksun...@gmail.com> wrote: >> >>> Hi all, >>> >>> I am currently writing an app that generates static files before serving >>> them, and I could use some input! Here's a step-by-step example of how the >>> app is setup: >>> >>> - the url mapping pulls a database entry >>> - using the data entry, static files are created from the data (for >>> example, a *.jpeg or a *.gltf) >>> - the app serves the html template with the generated static files >>> embedded (for example, via an <img> tag) >>> >>> The issue comes with the creation of the unique static files. I can have >>> the app create a file in the static folder, send it off, then delete the >>> file to ready for the next request -- but the webpage will run into issues >>> if multiple requests are made at the same time. If two people request the >>> same url at the same time, the app will fail because both requests are >>> trying to create/serve/delete an identical file (i.e. entry123.jpeg) at the >>> same time. Trying to mess with the filename to avoid this won't work here >>> either (i.e. naming entry123.01.jpeg, entry123.02.jpeg, entry123.03.jpeg, >>> ...). >>> >>> I can think of two solutions, but they both are things I'd like to avoid: >>> 1. have the files premade and stored -- I want to avoid this because of >>> the massive filesize required for all these files >>> 2. have the static files generated in a user-specific directory -- I >>> want to avoid this because I'd rather not have registered users on my >>> website >>> >>> Is there another solution to this? I'm still relatively new with Django, >>> so there might be something simple I'm missing. >>> >>> -Jack >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Django users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to django...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/django-users/190637d2-bd9b-499a-a122-1dc7adf2aca5%40googlegroups.com >>> <https://groups.google.com/d/msgid/django-users/190637d2-bd9b-499a-a122-1dc7adf2aca5%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/317c4ce6-5378-4e59-920e-c0fdcacd453a%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/317c4ce6-5378-4e59-920e-c0fdcacd453a%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Django users" group. 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