Limitations TL;DR

There are a number of limitations that you are likely to run into while you develop with Azle on ICP. These are generally the most limiting:

  • 5 billion instruction limit for query calls (HTTP GET requests) (~1 second of computation)
  • 20 billion instruction limit for update calls (HTTP POST/etc requests) (~5 seconds of computation)
  • 2 MiB request size limit
  • 3 MiB response size limit
  • 4 GiB heap limit
  • High request latency relative to traditional web applications (think seconds not milliseconds)
  • High costs relative to traditional web applications (think ~10x traditional web costs)

Read more here for in-depth information on current ICP limitations.