Engineer’s Codex has provided a detailed overview of Meta’s XFaaS serverless platform, which processes trillions of function calls per day across multiple datacenter regions. The article highlights that XFaaS focuses on optimizing hardware utilization and throughput of function calls, achieving a daily average CPU utilization of 66%, better than the industry average. The paper emphasizes the importance of software optimizing hardware usage to improve serverless performance. XFaaS is used for non-user-facing functions due to variable latency concerns for user-facing functions. The article also mentions unique features of XFaaS, such as running multiple functions from different users in the same process. The paper provides valuable insights for developers and companies looking to optimize their own serverless function usage.
https://read.engineerscodex.com/p/meta-xfaas-serverless-functions-explained