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Happy New Year! This is my first web dev side project and it's in early stage. As an interviewer in the tech industry, I often find myself cannot spot that sub

by yufw 6y ago

Happy New Year! This is my first web dev side project and it's in early stage. As an interviewer in the tech industry, I often find myself cannot spot that subtle bug in candidates' code during phone screening, so I build this website which lets me do collaborative editing and also run the code. You may find it useful too. Please help try it out and provide some feedback. No registration is required (because I have yet to implement the user system).

petters 6y ago
Cool! What is the difference to e.g. repl.it? Does it run Python locally in the browser or in the cloud?
- yufw 6y ago
  It certainly has less feature than repl.it, for example, it does not have interactive repl. It runs in the cloud, in docker containers.
  - FrozenVoid 6y ago
    repl.it requires registration.
  - aol1306 6y ago
    Do you have any abuse prevention mechanisms implemented? For instance, preventing users from running infinite loops, consuming too much resources and so on? I built a similar service as a personal project and I am interested how to properly handle situations like that.
    - yufw 6y ago
      Yes, currently the execution time is limited to 10s and 10s compilation time for compiled languages. Memory limit is 256M. It runs user code in docker container, I leverage docker for restricting resources, more info at https://docs.docker.com/config/containers/resource_constraints/ https://docs.docker.com/config/containers/resource_constrain...
swimminginlove 6y ago
Interesting project! Any plans to make it open source?
- yufw 6y ago
  No, I don't have plans to open source it currently. I am not sure where open source will take this project to and the source code is a bit messy. I may write about how I built it in the future.
- petterrasmussen 6y ago
  I just posted a Show HN for docker-run[1]. It can be used to implement the code running part for a project like this. [1] https://news.ycombinator.com/item?id=25602894 https://news.ycombinator.com/item?id=25602894
thenanyu 6y ago
An engineer on my team years ago felt the same as you and built his own solution for us to use during interview, eventually spinning it into a very successful business. Check out coderpad.io if you wanna get some inspiration. They took a similar technical approach as you described, at least for the first versions.
- yufw 6y ago
  Thanks, this is really inspiring!

by yufw 6y ago

petters 6y ago

Cool! What is the difference to e.g. repl.it? Does it run Python locally in the browser or in the cloud?

yufw 6y ago
It certainly has less feature than repl.it, for example, it does not have interactive repl. It runs in the cloud, in docker containers.
- FrozenVoid 6y ago
  repl.it requires registration.
- aol1306 6y ago
  Do you have any abuse prevention mechanisms implemented? For instance, preventing users from running infinite loops, consuming too much resources and so on? I built a similar service as a personal project and I am interested how to properly handle situations like that.
  - yufw 6y ago
    Yes, currently the execution time is limited to 10s and 10s compilation time for compiled languages. Memory limit is 256M. It runs user code in docker container, I leverage docker for restricting resources, more info at https://docs.docker.com/config/containers/resource_constraints/ https://docs.docker.com/config/containers/resource_constrain...

swimminginlove 6y ago

Interesting project! Any plans to make it open source?

yufw 6y ago
No, I don't have plans to open source it currently. I am not sure where open source will take this project to and the source code is a bit messy. I may write about how I built it in the future.
petterrasmussen 6y ago
I just posted a Show HN for docker-run[1]. It can be used to implement the code running part for a project like this. [1] https://news.ycombinator.com/item?id=25602894 https://news.ycombinator.com/item?id=25602894

thenanyu 6y ago

An engineer on my team years ago felt the same as you and built his own solution for us to use during interview, eventually spinning it into a very successful business. Check out coderpad.io if you wanna get some inspiration. They took a similar technical approach as you described, at least for the first versions.

yufw 6y ago
Thanks, this is really inspiring!