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Soam Vasani
2016-11-17 16:11:56 -08:00
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@@ -2,16 +2,16 @@ Fission: Serverless Functions for Kubernetes
============================================ ============================================
Fission is a fast serverless framework for Kubernetes with a focus on Fission is a fast serverless framework for Kubernetes with a focus on
developer productivity and high performance. See http://fission.io developer productivity and high performance.
for more.
Fission operates on just code: you don't deal with Docker or Fission operates on _just code_: Docker and Kubernetes are abstracted
Kubernetes, they're abstracted away. away.
We're built on Kubernetes because we think any non-trivial app will Fission is extensible to any language. It currently supports NodeJS
use a combination of serverless functions and more conventional and Python, with more languages coming soon.
microservices, and Kubernetes is a great framework to bring these
together seamlessly. 100msec cold start
------------------
Fission maintains a pool of "warm" containers that each contain a Fission maintains a pool of "warm" containers that each contain a
small dynamic loader. When a function is first called, small dynamic loader. When a function is first called,
@@ -19,8 +19,16 @@ i.e. "cold-started", a running container is chosen and the function is
loaded. This pool is what makes Fission fast: cold-start latencies loaded. This pool is what makes Fission fast: cold-start latencies
are typically about 100msec. are typically about 100msec.
Fission is extensible to any language. It currently supports NodeJS
and Python, with more languages coming soon. Kubernetes is the right place for Serverless
--------------------------------------------
We're built on Kubernetes because we think any non-trivial app will
use a combination of serverless functions and more conventional
microservices, and Kubernetes is a great framework to bring these
together seamlessly.
Fission Concepts Fission Concepts
================ ================
@@ -29,10 +37,10 @@ A _function_ is a piece of code with an entry point.
An _environment_ is a container with a webserver and dynamic loader An _environment_ is a container with a webserver and dynamic loader
for functions. Today, Fission comes with NodeJS and Python for functions. Today, Fission comes with NodeJS and Python
environments and you can also add your own. So for example if you environments. You can also add your own: for example, if you want to
want to add some binaries to your Python image and call them from your add a binary to your Python image, you can edit the Python
code, you can edit the Python environment's Dockerfile, rebuild it, environment's Dockerfile, rebuild it, and add your new environment to
and add it to Fission. Fission.
A _trigger_ is something that maps an event to a function; Fission A _trigger_ is something that maps an event to a function; Fission
supports HTTP triggers today, with upcoming support for other types of supports HTTP triggers today, with upcoming support for other types of