ta-ching chen

8 minute read


When users try to develop serverless applications, they often choose to start with serverless services offered on public clouds, like AWS Lambda or Google Cloud Functions. However, users may encounter following problems after application development:

  1. Simulating the same environment on local machines is difficult
  2. Vendor lock-in prevents moving applications from one cloud provider to another
  3. Sensitive data that should not be sent outside an on-premises datacenter

Fission is a serverless framework built on top of Kubernetes. Here are some benefits for adopting Fission as serverless solution to develop a severless application:

  • Portability
    • Laptop, PC, On-premises datacenter, even cloud providers. Wherever you can run Kubernetes, you can run Fission.
    • Recreate a serverless application in short time with fission spec files.
  • Support rich event sources
    • HTTP Trigger
    • Message queue trigger: NATS, Kafka
    • Time trigger
  • Rich Environment (Language) supportability
    • NodeJs, Go, Python, Java (JVM languages), Ruby, Perl, PHP7, DotNet, DotNet2, Binary
    • BYOE (Build Your Own Environment)
  • Build automation
    • Builder manager inside Fission helps to create a deployable function package from source code.

After seeing these advantages for adopting Fission as serverless framework, you may feel exciting and start wondering how to create a serverless applciation with Fission. Let’s dive into the concepts of fission first.

Use Multi-Stage Builds to Improve Continuous Delivery Pipeline

Learn how to use Docker multi-stage builds

ta-ching chen

3 minute read


A basic rule for building a container image is “the smaller is better”.

But it’s not an easy job for the compiled language (e.g. go, java) due to large build environment and dependencies. In the post “Building Minimal Docker Image for Go Applications”, we need to produce a go binary first and put it into scratch image. And it’s quite complicated and heavy for developers to create such continuous delivery pipeline.

To solve this problem, Docker 17.05+ releases a new feature called Multi-stage builds. With this feature we can combine multiple dockerfiles into one and let base image to copy artifacts and outputs from the intermediate image. In this way, we can keep pipeline easy to read and maintain.

Fission and Istio Integration

Tutorial for how to integrate Fission with Istio

ta-ching chen

3 minute read



Fission is a framework for serverless functions on Kubernetes. Istio is an open platform to connect, manage, and secure microservice announced by Google, IBM and Lyft. It makes sense to combine them together to provide user more powerful functionalities.

Since this is the very first step for fission to integrate with Istio, there are still couple problems need to be solved. For those interested in trying to integrate fission with istio, following is the set up tutorial.


Test Environment

  • Google Kubernetes Engine: 1.9.2-gke.1 cluster
  • Fission: 0.6.0
  • Istio: 0.6.0

Create Kubernetes v1.9+ Alpha Cluster

Available zone can be found here

$ export ZONE=<zone name>
$ gcloud container clusters create istio-demo-1 \
    --machine-type=n1-standard-2 \
    --num-nodes=1 \
    --no-enable-legacy-authorization \
    --zone=$ZONE \