With interest in serverless computing increasing rapidly, the question of which technology solutions will win is receiving much interest. Although there is significant industrial activity relating to serverless – driven primarily by the AWS Lambda ecosystem – there is a clear need for solutions which are not premised on lock-in to a single provider and which can work across clouds. OpenWhisk and Knative are two technologies which focus on this space – here we consider the relative positioning of these technologies based on our experience working with them.
In two previous blog posts – here and here – we discussed our experience with deploying OpenWhisk on Kubernetes on OpenStack. As applied researchers at the Service Prototyping Lab, we are investigating potential use cases for such setups and for FaaS-based applications in general. In this blog post, we will therefore describe how we built a sample MQTT-based application that shows OpenWhisk in action for sensor data processing for future Internet of Things and smart dust scenarios.
The basic idea of the application is that it consumes data from an MQTT feed, stores it in a database and provides a means to access the database via a web UI. The architecture of the application is shown in the figure below. The application is based on this blog post.
In a previous blog post, we described our experience with deploying OpenWhisk on Kubernetes on OpenStack. During subsequent testing, we observed some issues with the OpenWhisk deployment wherein some OpenWhisk components – specifically, the controller and the invoker – would fail to restart after rebooting the machines running the Kubernetes nodes for maintenance tasks. To fix this, we had to redeploy OpenWhisk after each failure which resulted in significant data loss and was clearly an unacceptable operational solution.
Serverless applications is one topic that SPLab has been working on for a couple of years now, with, for example, our work on a stand-alone FaaS platform Snafu, work on disaggregating applications into serverless functions, Podilizer and other activities. Having organised ESSCA some weeks ago, we are now again exploring the technical limits and challenges in this space. This blog post reports about our experience of running the combination of OpenWhisk, Kubernetes, Helm and OpenStack.
Bachelor students of computer science at Zurich University of Applied Sciences focus a lot on software development. Software is never developed in the blue; rather, software needs a concrete environment to function and to deliver value. In ‘Programming’ (1st/2nd semester) and ‘Software Development’ (3rd/4th semester), you learn some basic skills. In ‘Systems-oriented Programming’ (2nd semester), you apply these skills to predefined systems with some constraints. In ‘Web Development’ (3rd semester), you apply these skills to another environment in which there is a lot of pace through new technologies. In ‘Game Development’ (5th semester), you develop for specific interactive scenarios, and in ‘Mobile Applications’ (5th semester, you develop user-facing apps for common mobile platforms.
One of the most fascinating and economically important areas is the development of applications which run in the cloud. You may access them with web or mobile devices, but you still cannot see them! Still, they are very powerful, scalable to millions of users, and interconnected across cloud providers and with various backend systems such as databases, message queues and key-value stores. This is why we offer SCAD, a new elective module on Serverless and Cloud-native Application Development.
Through several years of research on the subject of cloud functions, researchers including ourselves have gained a thorough understanding of the advantages and disadvantages of function-based application development. Along with increased maturity of FaaS, a more specialised consideration of potential use cases is needed to filter out the ones where the technology shines compared to the ones where significant weaknesses become apparent and other technologies, perhaps even in combination, would be a better fit. This early experience report informs about how we have deployed cloud functions around an existing cloud management platform as a variant of the well-known solar system approach of introducing microservices around monoliths.
At Zurich University of Applied Sciences, in particular at the Service Prototyping Lab, we are very proud to announce a packed global technology event week which brings many international experts in cloud computing, big data computing and serverless computing into little Switzerland. Join us for more than 140 unique technical and scientific talks over five days!
11th IEEE/ACM International Conference on Utility and Cloud Computing – UCC 2018
5th IEEE/ACM International Conference on Big Data Computing, Applications and Technologies – BDCAT 2018
From the 17th to the 20th of December, we expect around 200 attendees at the Technopark to discuss trends and progress on many cloud and big data topics. Apart from the two main conference tracks, there will be a cloud challenge, a doctoral forum, a posters presentation, 4 tutorials, and 8 workshops on diverse emerging topics (e.g. cloud-native, sustainable big data for environments, software testing, security and trust). Broad industry support is lined up to support the event with attendees and corporate support. Daypasses start at 350 CHF.
Check the UCC and BDCAT websites for programme and registration!
European Symposium on Serverless Computing and Applications – ESSCA 2018
In addition to UCC and BDCAT, we offer a community-priced event on the 21st of December where starting with 50 CHF you can attend to listen to 16 expert talks and tutorials on the trend topics of serverless computing, FaaS and cloud functions.
AWS Cloud Summer School Switzerland was scheduled as a five-day event organized by Amazon. The event took place from September 3 – 7, 2018 in Zurich, Switzerland. From the outline, it appeared worth attending as it offered high-quality educational modules and hands-on labs. The SPLab was thus present at the event and this blog post aims to briefly summarize what took place and what implications can be inferred for the near future of cloud applications. Continue reading
On July 31 and August 1/2, purposefully disregarding the Swiss national holiday, the Service Prototyping Lab at Zurich University of Applied Sciences was represented at the premises of the Indian Institute of Technology, the former Indian School of Mines, in Dhanbad, the most populous city in the northeastern Indian state Jharkhand. Although the area is traditionally known for its coal and minerals industry, IIT (ISM) Dhanbad is also offering teaching, research and academic services including conference organisation in computer science fields. This matching profile with overlapping areas has triggered our interest, and thus Josef Spillner made the trip to offer guest lectures, tutorials and faculty-level discussions about future exchanges. This article reports on the days spent in Dhanbad.
ESSCA – the European Symposium on Serverless Computing and Applications – is happening on 21 December 2018 in the ZHAW Toni-Areal tower in Zurich, Switzerland. Do you have anything to share related to FaaS, cloud functions, serverless applications and systems, as well as related technologies and software development experience? Please submit your proposals accordingly until 1 September.