|By James Sun||
|October 27, 2012 03:00 PM EDT||
The electromagnetic spectrum buzzes with activity. Smartphones, wireless headsets, desktop computers, in-car navigation systems, GPS-enabled gadgets, and many more devices compete for bandwidth as well as our attention. I served as the lead software developer for a team that recently completed a demonstration of a real-time, pedestrian monitoring system at Sakura Matsuri, a major street festival in Washington, D.C. We chose PubNub as our real-time messaging backbone and this article will provide some insight into how we used PubNub and why it was the right platform for us.
Our project team, which included members from Traffax, Inc., Michael Belisle Design and Agile Media Ventures, was awarded a grant via the Reliability IDEA program, which is administered by the Transportation Research Board. The program (http://www.trb.org/IDEAProgram/IDEAReliability.aspx) funded proposals with potential to test innovative ways to improve the consistency or dependability of travel times, improve travel time prediction, and provide information to travelers and other highway system users when dealing with unexpected delays. A major goal of our project was to develop, implement and document a real-time pedestrian monitoring system at a large, outdoor event.
We approached the Japan-America Society of Washington, D.C., sponsors of the Sakura Matsuri Festival, the largest one-day display of Japanese culture in the United States. It's held each April as the climax of the National Cherry Blossom Festival. In years past, the festival has attracted well over 100,000 visitors in an area that covers several city blocks near the National Mall.
The technical architecture for our project consisted of five key elements:
- BluFax sensors
Sensors were deployed in strategic locations, primarily entrances/exits and performance stages, at Sakura Matsuri. The sensors listened for BluetoothTM devices that are set in "discover" mode and uploaded detected devices to the Data server.
- Data server
The Data server received packets of data transmitted by the BluFax sensors, did some limited processing, and forwarded them to the Messaging server.
- Messaging server
The Messaging server was the heart of the system. It's where all of the incoming data, both the raw, sensor-generated data and the data from external publishers described below, was transformed into more usable information. This information was then published via PubNub. In addition to serving as the primary publisher, the Messaging server saved the sensor data in MongoDB for post-event analysis.
- Data publishers
For our demonstration, we developed a mobile web application that served as just another publisher in our architecture. In addition, we developed standalone services (using node.js) that monitored social networking sites, such as Twitter and Flickr, and published related tweets and pictures to PubNub.
- Information consumers
We developed two interfaces that consumed and presented the data generated by the event. One was a web page that presented the data, most of which was geotagged, on a Google Map in real-time. The second was a visual dashboard that showed key performance indicators of sensor-related data.
As the lead developer, my role on the project was to create the software architecture to support the demonstration at Sakura Matsuri. The remainder of this article will focus on how PubNub was integrated in the last three components of that architecture.
PubNub served as the primary messaging backbone for our technical architecture. I developed a simple specification for how all messages should be formatted throughout our application. Once the team committed to the spec, we were able to integrate publishers and subscribers very easily, across a variety of locations, platforms and technologies.
Figure 1: Main Web Display
The mobile web application, developed with PhoneGap, included a function which simulated a parking garage that updated festival attendees on the number of spaces available for patrons. Instead of spending our limited resources building and maintaining a fast, robust and scalable messaging infrastructure, PubNub allowed us to focus our energy on integrating several varied sources of data and building creative ways to present the information.
I explored several messaging options before settling on PubNub. My goals were to build something quickly using node.js, host it in the cloud, and support our "bursty" traffic load without getting bogged down in managing multiple servers and services. The first option I looked at was building our application on top of Socket.IO, a terrific library developed by Guillermo Rauch, a superstar in the node.js community. While Socket.IO is a solid library, we didn't have the time or development resources to build up the necessary infrastructure to host, manage and tune a server running Socket.IO.
At the time I was considering various options, the primary (commercial) competitor to PubNub was Pusher. While there is a key technical difference between the two services - PubNub uses HTTP streaming/long polling while Pusher uses websockets - for our use case, the base feature set and pricing offered by both were pretty similar. Since I had already hacked together a quick-and-dirty prototype using the tutorials, documentation and libraries provided by PubNub, it made the most sense to stick with PubNub.
One key benefit of PubNub now is the availability of data centers worldwide through its Multi-Region Deployment add-on. As we look to deploy our solution across the U.S. and internationally, having a technology partner who has a global presence, will be a critical success factor.
In the end, I was very happy my choice of PubNub. Their feature set and customer support were key factors in my success.
Our demonstration at Sakura Matsuri went extremely well and was well received by the sponsor as well as curious attendees. If you're interested, you can watch a short video documenting our project here, http://vimeo.com/50101608. Now that the event is over, I've had an opportunity to sit back and take a hard look at what we accomplished and the role that PubNub played in our solution. Here are a couple of things to keep in mind if you're evaluating PubNub as a real-time messaging component for your solution:
For our demonstration at Sakura Matsuri, we did not take advantage of segregating messages via channels. One benefit of incorporating channels is that subscribers could decide which types of messages they were most interested in receiving. Traffic and parking messages would be useful to those driving to the event, but less helpful to folks taking public transportation.
PubNub is fast. While a comprehensive performance analysis is beyond the scope of this article, let's just say that there were plenty of other components that were part of the overall architecture that were much slower than PubNub.
- Customer Support
For paid customers, PubNub offers 24x7 phone support and a service level agreement (SLA). As it turned out, I did have to call PubNub support on the day of the event. Like any good developer, I decided to modify code at the last minute (!) and wound up breaking something that had worked previously. I spoke to a PubNub customer support engineer, and he addressed my issue quickly and completely.
Financial Technology has become a topic of intense interest throughout the cloud developer and enterprise IT communities. Accordingly, attendees at the upcoming 20th Cloud Expo at the Javits Center in New York, June 6-8, 2017, will find fresh new content in a new track called FinTech.
Dec. 10, 2016 05:15 PM EST Reads: 2,340
Today’s IT environments are increasingly heterogeneous, with Linux, Java, Oracle and MySQL considered nearly as common as traditional Windows environments. In many cases, these platforms have been integrated into an organization’s Windows-based IT department by way of an acquisition of a company that leverages one of those platforms. In other cases, the applications may have been part of the IT department for years, but managed by a separate department or singular administrator. Still, whether...
Dec. 10, 2016 04:45 PM EST Reads: 899
Without lifecycle traceability and visibility across the tool chain, stakeholders from Planning-to-Ops have limited insight and answers to who, what, when, why and how across the DevOps lifecycle. This impacts the ability to deliver high quality software at the needed velocity to drive positive business outcomes. In his general session at @DevOpsSummit at 19th Cloud Expo, Phil Hombledal, Solution Architect at CollabNet, discussed how customers are able to achieve a level of transparency that e...
Dec. 10, 2016 04:30 PM EST Reads: 1,330
Logs are continuous digital records of events generated by all components of your software stack – and they’re everywhere – your networks, servers, applications, containers and cloud infrastructure just to name a few. The data logs provide are like an X-ray for your IT infrastructure. Without logs, this lack of visibility creates operational challenges for managing modern applications that drive today’s digital businesses.
Dec. 10, 2016 04:00 PM EST Reads: 1,862
Rapid innovation, changing business landscapes, and new IT demands force businesses to make changes quickly. In the eyes of many, containers are at the brink of becoming a pervasive technology in enterprise IT to accelerate application delivery. In this presentation, attendees learned about the: The transformation of IT to a DevOps, microservices, and container-based architecture What are containers and how DevOps practices can operate in a container-based environment A demonstration of how ...
Dec. 10, 2016 03:45 PM EST Reads: 1,305
Cloud Expo, Inc. has announced today that Andi Mann returns to 'DevOps at Cloud Expo 2017' as Conference Chair The @DevOpsSummit at Cloud Expo will take place on June 6-8, 2017, at the Javits Center in New York City, NY. "DevOps is set to be one of the most profound disruptions to hit IT in decades," said Andi Mann. "It is a natural extension of cloud computing, and I have seen both firsthand and in independent research the fantastic results DevOps delivers. So I am excited to help the great t...
Dec. 10, 2016 03:45 PM EST Reads: 883
If you haven’t heard yet, CollabNet just put out some very big news for managing and gaining value from DevOps. We introduced CollabNet DevOps Lifecycle Manager (DLM) — a platform designed exclusively for providing a single pane of glass, dashboard, and traceability views across your DevOps toolchain and processes from planning to operations and that can be traced back to planning and development.
Dec. 10, 2016 02:45 PM EST Reads: 895
@DevOpsSummit taking place June 6-8, 2017 at Javits Center, New York City, is co-located with the 20th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. @DevOpsSummit at Cloud Expo New York Call for Papers is now open.
Dec. 10, 2016 02:30 PM EST Reads: 2,048
SYS-CON Events announced today that Fusion, a leading provider of cloud services, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Fusion, a leading provider of integrated cloud solutions to small, medium and large businesses, is the industry’s single source for the cloud. Fusion’s advanced, proprietary cloud service platform enables the integration of leading edge solutions in the cloud, including cloud...
Dec. 10, 2016 01:45 PM EST Reads: 703
@DevOpsSummit at Cloud taking place June 6-8, 2017, at Javits Center, New York City, is co-located with the 20th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long developm...
Dec. 10, 2016 12:30 PM EST Reads: 1,968
Get deep visibility into the performance of your databases and expert advice for performance optimization and tuning. You can't get application performance without database performance. Give everyone on the team a comprehensive view of how every aspect of the system affects performance across SQL database operations, host server and OS, virtualization resources and storage I/O. Quickly find bottlenecks and troubleshoot complex problems.
Dec. 10, 2016 12:15 PM EST Reads: 2,284
SYS-CON Events announced today that Dataloop.IO, an innovator in cloud IT-monitoring whose products help organizations save time and money, has been named “Bronze Sponsor” of SYS-CON's 20th International Cloud Expo®, which will take place on June 6-8, 2017, at the Javits Center in New York City, NY. Dataloop.IO is an emerging software company on the cutting edge of major IT-infrastructure trends including cloud computing and microservices. The company, founded in the UK but now based in San Fran...
Dec. 10, 2016 12:00 PM EST Reads: 787
The 20th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held June 6-8, 2017, at the Javits Center in New York City, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Containers, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportunity. Submit your speaking proposal ...
Dec. 10, 2016 12:00 PM EST Reads: 2,402
DevOps is being widely accepted (if not fully adopted) as essential in enterprise IT. But as Enterprise DevOps gains maturity, expands scope, and increases velocity, the need for data-driven decisions across teams becomes more acute. DevOps teams in any modern business must wrangle the ‘digital exhaust’ from the delivery toolchain, "pervasive" and "cognitive" computing, APIs and services, mobile devices and applications, the Internet of Things, and now even blockchain. In this power panel at @...
Dec. 10, 2016 12:00 PM EST Reads: 1,102
Kubernetes is a new and revolutionary open-sourced system for managing containers across multiple hosts in a cluster. Ansible is a simple IT automation tool for just about any requirement for reproducible environments. In his session at @DevOpsSummit at 18th Cloud Expo, Patrick Galbraith, a principal engineer at HPE, discussed how to build a fully functional Kubernetes cluster on a number of virtual machines or bare-metal hosts. Also included will be a brief demonstration of running a Galera MyS...
Dec. 10, 2016 08:45 AM EST Reads: 5,491
About a year ago we tuned into “the need for speed” and how a concept like "serverless computing” was increasingly catering to this. We are now a year further and the term “serverless” is taking on unexpected proportions. With some even seeing it as the successor to cloud in general or at least as a successor to the clouds’ poorer cousin in terms of revenue, hype and adoption: PaaS. The question we need to ask is whether this constitutes an example of Hype Hopping: to effortlessly pivot to the ...
Dec. 10, 2016 07:45 AM EST Reads: 2,533
As we enter the final week before the 19th International Cloud Expo | @ThingsExpo in Santa Clara, CA, it's time for me to reflect on six big topics that will be important during the show. Hybrid Cloud: This general-purpose term seems to provide a comfort zone for many enterprise IT managers. It sounds reassuring to be able to work with one of the major public-cloud providers like AWS or Microsoft Azure while still maintaining an on-site presence.
Dec. 10, 2016 05:00 AM EST Reads: 3,044
I’m a huge fan of open source DevOps tools. I’m also a huge fan of scaling open source tools for the enterprise. But having talked with my fair share of companies over the years, one important thing I’ve learned is that you can’t scale your release process using open source tools alone. They simply require too much scripting and maintenance when used that way. Scripting may be fine for smaller organizations, but it’s not ok in an enterprise environment that includes many independent teams and to...
Dec. 10, 2016 04:15 AM EST Reads: 853
Between 2005 and 2020, data volumes will grow by a factor of 300 – enough data to stack CDs from the earth to the moon 162 times. This has come to be known as the ‘big data’ phenomenon. Unfortunately, traditional approaches to handling, storing and analyzing data aren’t adequate at this scale: they’re too costly, slow and physically cumbersome to keep up. Fortunately, in response a new breed of technology has emerged that is cheaper, faster and more scalable. Yet, in meeting these new needs they...
Dec. 10, 2016 02:00 AM EST Reads: 2,006
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, discussed how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team at D...
Dec. 10, 2016 01:00 AM EST Reads: 1,291