Welcome!

Java IoT Authors: Pat Romanski, Liz McMillan, Peter Silva, Patrick Hubbard, Jyoti Bansal

Related Topics: Java IoT, Microservices Expo, Microsoft Cloud, Machine Learning , Agile Computing, @BigDataExpo

Java IoT: Article

Ten Questions to Avoid a Classical Business War Room Scenario

Make sure you have the real facts available in order to get through these situations as fast as possible

I personally don't like the term "War Room" when describing a firefighting situation that many software companies have to deal with when systems go down or have problems. The way these war rooms typically play out is that key personnel (engineers, operations, business) are summoned into a room until the problem is solved. This was the case back with the Apollo 13 mission and still is now when we look at the famous Facebook war room from Dec 2012:

The War Room back then - And Now: Not a whole lot different

What's the problem with these pictures? There are a lot of people in the room that have no clue whether the problem on hand is actually something they can fix or are responsible for. All of these people are summoned without first figuring out which people should look at the problem. Why is that? Because the collected "evidence" in the form of infrastructure monitoring data, log files, user complaints, etc., just shows symptoms but doesn't tell us anything about the actual impact and root cause of issues:

Would you know whom to bring into a war room based on these "facts"? Would you want to be one of them?

Looking at the previous image, it is hard to tell which people need to get in a room. Do we just need an Ops guy to restart the process that consumes all of the CPU? Or do we need an application expert that sifts through log files? Do we need to contact our mobile solution provider because it is an actual problem in the 3rd party mobile native app? The typical MO is to simply call-in everybody to figure out the root cause of the problem and with that pulling critical resources from other important projects without even knowing if these folks can actually help solving these problems. How can we change this? By asking the right questions first!

The 10 Real Questions to Ask
You don't need nice and shiny dashboards that show you an aggregated overview of twitter statuses, infrastructure health or insight into slow application transactions. You need data to answer the following questions - whether it is presented in nice dashboards or log files doesn't really matter:

Having answers to these 10 questions avoids calling too many people in a war room and improves handling of critical application problems

1. Is an individual user complaining?
Is it "just" the CEO that complains about a problem with your newly deployed internal app because a report doesn't work on his old IE6? Or is it "just" the end user in a remote location that still uses dial-up? Knowing whether a problem just happens for a single or a very small group of users is important to prioritize.

Analyzing the problem of the complaining user lets us assess whether it is a problem related to just "that" user, e.g, using an unsupported browser version, slow network connectivity,...

2. Are "all" users impacted?
If a large number of users are impacted but you may not have individuals that really complain about it you still need to know as it is very critical to you fix any problems that impact a large number of your users?

Having the evidence that a large number of people in a certain region, using a certain browser or a certain device makes it easy to prioritize this issue

3. Is the problem in the application?
The next question, after knowing whether users are impacted or not, is to figure out if the problem is in the application or not. This allows us to call in the application experts, architects and developers if needed. Looking at the performance distribution gives us an overview where our hotspots really are:

Where are the performance and problem hotspots? Is it really the application? Or do we need to involve other teams?

4. Is there a problem in the delivery chain?
Modern web applications rely on a long list of services along the delivery chain that lies outside of our own data center. That includes CDNs, third-party services, ISPs or mobile networks. Knowing the status of these services and their impact on end user performance of our own application allows us to answer whether to look into our own data center or calling up Akamai, Facebook & Co:

Do CDNs or other third-party services experience any performance issues and is that the root cause of our complaining users?

5. Is one uncritical transaction impacted?
When the error rate goes up - is it a critical transaction such as search? Or is it rather uncritical such as the Contact Page. Or is a BOT causing lots of errors because it crawls through pages that do not exist anyway or that require authentication and with that skews the overall error rate?

Analyzing which transactions drive the error rate may show you that these are not critical because either caused by a BOT or on pages that are not business critical

6. Are critical transactions impacted?
What if your critical transactions are impacted such as the landing page, login, search, or entering a ticket in your support system? These are critical transactions to you, your end users, or your colleagues that need to use the back office software for their daily tasks. If these are impacted you need to act fast. Therefore it is important to monitor these critical transactions on failure rate as well as performance. If these are impacted it is more important to act than other transactions that are not vital to your business - and - you also know which subject matter experts to call:

Monitoring your critical transactions allows you to identify problems on those areas that are critical for your business

7. Is the problem related to bad coding?
If application response time is getting slower, the first question is whether it is because of bad coding. Analyzing the performance hotspot to the code level can tell you whether most of the time is spent because of inefficient algorithms or just not following coding and architectural best practices:

Throwing thousands of exceptions to control program flow is not a good coding practice and also impacts performance

8. Does the infrastructure cause an issue?
What if it is not the app itself, but the app is running low on resources provided by the infrastructure? What if the CPU required to run the Garbage Collector is not available because the machine also runs lots of other services on an already over utilized machine? In that case it is time to think about the infrastructure - better distributing these applications and services or scaling the infrastructure:

Where does the memory shortage come from? Does it impact other processes on that machine? Which processes to move to a different machine?

9. Is the AppServer the issue?
Depending on the AppServer you are using you have multiple configuration options to optimize the usage for your environment. The question remains whether the AppServer might be responsible for performance issues caused by an incorrect setting or corrupt deployment. Correct resource pool (threads, database connection, ...) sizing, security settings or logging options can impact the performance. If it turns out that the AppServer is the problem contact your IBM, Oracle, Microsoft ... specialist:

A global synchronized logging feature of IBMs WebSphere caused this performance issue which can be resolved through configuration settings in the AppServer

10. Is the problem in the virtual machine?
Leveraging virtual compute power - whether it is from your local running VM server farm or running in one of the cloud providers - provides lots of flexibility. But it can also be the reason for performance problems if the virtual machines are not properly sized or are battling for resources with other virtual machines on the same virtual server. Knowing the impact of virtualization on the application allows you to call in the VM experts and not the app developers to solve a problem:

Understanding what is going in EC2, Azure or your VMware ESX Server allows you to figure out whether the virtualize environment is the root cause

Have an Answer to These Questions?
Now that you have an idea about the right questions to ask before you call a war room session together - or before you accept a call into such scenario, you can start focusing on preventing these sessions. Whether you are a developer, architect or on the business side, make sure you have the real facts available in order to get through these situations as fast as possible by calling in the RIGHT people and giving them the RIGHT data to analyze.

Better than spending time in War Rooms however is to prevent the number of times these situations come up. If you want to learn more about this check out some of the other blogs we recently wrote such as Performance-focused DevOps or - in case you happen to be getting ready for the holiday shopping season - Verify Readiness in Test & Pre-Production.

More Stories By Andreas Grabner

Andreas Grabner has been helping companies improve their application performance for 15+ years. He is a regular contributor within Web Performance and DevOps communities and a prolific speaker at user groups and conferences around the world. Reach him at @grabnerandi

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@ThingsExpo Stories
Technology vendors and analysts are eager to paint a rosy picture of how wonderful IoT is and why your deployment will be great with the use of their products and services. While it is easy to showcase successful IoT solutions, identifying IoT systems that missed the mark or failed can often provide more in the way of key lessons learned. In his session at @ThingsExpo, Peter Vanderminden, Principal Industry Analyst for IoT & Digital Supply Chain to Flatiron Strategies, will focus on how IoT depl...
Data is an unusual currency; it is not restricted by the same transactional limitations as money or people. In fact, the more that you leverage your data across multiple business use cases, the more valuable it becomes to the organization. And the same can be said about the organization’s analytics. In his session at 19th Cloud Expo, Bill Schmarzo, CTO for the Big Data Practice at Dell EMC, introduced a methodology for capturing, enriching and sharing data (and analytics) across the organization...
With all the incredible momentum behind the Internet of Things (IoT) industry, it is easy to forget that not a single CEO wakes up and wonders if “my IoT is broken.” What they wonder is if they are making the right decisions to do all they can to increase revenue, decrease costs, and improve customer experience – effectively the same challenges they have always had in growing their business. The exciting thing about the IoT industry is now these decisions can be better, faster, and smarter. Now ...
WebRTC is about the data channel as much as about video and audio conferencing. However, basically all commercial WebRTC applications have been built with a focus on audio and video. The handling of “data” has been limited to text chat and file download – all other data sharing seems to end with screensharing. What is holding back a more intensive use of peer-to-peer data? In her session at @ThingsExpo, Dr Silvia Pfeiffer, WebRTC Applications Team Lead at National ICT Australia, looked at differ...
The cloud market growth today is largely in public clouds. While there is a lot of spend in IT departments in virtualization, these aren’t yet translating into a true “cloud” experience within the enterprise. What is stopping the growth of the “private cloud” market? In his general session at 18th Cloud Expo, Nara Rajagopalan, CEO of Accelerite, explored the challenges in deploying, managing, and getting adoption for a private cloud within an enterprise. What are the key differences between wh...
"ReadyTalk is an audio and web video conferencing provider. We've really come to embrace WebRTC as the platform for our future of technology," explained Dan Cunningham, CTO of ReadyTalk, in this SYS-CON.tv interview at WebRTC Summit at 19th Cloud Expo, held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
In 2014, Amazon announced a new form of compute called Lambda. We didn't know it at the time, but this represented a fundamental shift in what we expect from cloud computing. Now, all of the major cloud computing vendors want to take part in this disruptive technology. In his session at 20th Cloud Expo, John Jelinek IV, a web developer at Linux Academy, will discuss why major players like AWS, Microsoft Azure, IBM Bluemix, and Google Cloud Platform are all trying to sidestep VMs and containers...
IoT is at the core or many Digital Transformation initiatives with the goal of re-inventing a company's business model. We all agree that collecting relevant IoT data will result in massive amounts of data needing to be stored. However, with the rapid development of IoT devices and ongoing business model transformation, we are not able to predict the volume and growth of IoT data. And with the lack of IoT history, traditional methods of IT and infrastructure planning based on the past do not app...
The many IoT deployments around the world are busy integrating smart devices and sensors into their enterprise IT infrastructures. Yet all of this technology – and there are an amazing number of choices – is of no use without the software to gather, communicate, and analyze the new data flows. Without software, there is no IT. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, Dave McCarthy, Director of Products at Bsquare Corporation; Alan Williamson, Principal ...
WebRTC has had a real tough three or four years, and so have those working with it. Only a few short years ago, the development world were excited about WebRTC and proclaiming how awesome it was. You might have played with the technology a couple of years ago, only to find the extra infrastructure requirements were painful to implement and poorly documented. This probably left a bitter taste in your mouth, especially when things went wrong.
SYS-CON Media announced today that @WebRTCSummit Blog, the largest WebRTC resource in the world, has been launched. @WebRTCSummit Blog offers top articles, news stories, and blog posts from the world's well-known experts and guarantees better exposure for its authors than any other publication. @WebRTCSummit Blog can be bookmarked ▸ Here @WebRTCSummit conference site can be bookmarked ▸ Here
A critical component of any IoT project is what to do with all the data being generated. This data needs to be captured, processed, structured, and stored in a way to facilitate different kinds of queries. Traditional data warehouse and analytical systems are mature technologies that can be used to handle certain kinds of queries, but they are not always well suited to many problems, particularly when there is a need for real-time insights.
Providing secure, mobile access to sensitive data sets is a critical element in realizing the full potential of cloud computing. However, large data caches remain inaccessible to edge devices for reasons of security, size, format or limited viewing capabilities. Medical imaging, computer aided design and seismic interpretation are just a few examples of industries facing this challenge. Rather than fighting for incremental gains by pulling these datasets to edge devices, we need to embrace the i...
Web Real-Time Communication APIs have quickly revolutionized what browsers are capable of. In addition to video and audio streams, we can now bi-directionally send arbitrary data over WebRTC's PeerConnection Data Channels. With the advent of Progressive Web Apps and new hardware APIs such as WebBluetooh and WebUSB, we can finally enable users to stitch together the Internet of Things directly from their browsers while communicating privately and securely in a decentralized way.
Fifty billion connected devices and still no winning protocols standards. HTTP, WebSockets, MQTT, and CoAP seem to be leading in the IoT protocol race at the moment but many more protocols are getting introduced on a regular basis. Each protocol has its pros and cons depending on the nature of the communications. Does there really need to be only one protocol to rule them all? Of course not. In his session at @ThingsExpo, Chris Matthieu, co-founder and CTO of Octoblu, walked through how Octob...
The Internet of Things can drive efficiency for airlines and airports. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Sudip Majumder, senior director of development at Oracle, discussed the technical details of the connected airline baggage and related social media solutions. These IoT applications will enhance travelers' journey experience and drive efficiency for the airlines and the airports.
SYS-CON Events announced today that Catchpoint, a leading digital experience intelligence company, has been named “Silver 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. Catchpoint Systems is a leading Digital Performance Analytics company that provides unparalleled insight into your customer-critical services to help you consistently deliver an amazing customer experience. Designed for digital business, C...
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo 2016 in New York. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place June 6-8, 2017, at the Javits Center in New York City, New York, is co-located with 20th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry p...
In his General Session at 17th Cloud Expo, Bruce Swann, Senior Product Marketing Manager for Adobe Campaign, explored the key ingredients of cross-channel marketing in a digital world. Learn how the Adobe Marketing Cloud can help marketers embrace opportunities for personalized, relevant and real-time customer engagement across offline (direct mail, point of sale, call center) and digital (email, website, SMS, mobile apps, social networks, connected objects).
Things are changing so quickly in IoT that it would take a wizard to predict which ecosystem will gain the most traction. In order for IoT to reach its potential, smart devices must be able to work together. Today, there are a slew of interoperability standards being promoted by big names to make this happen: HomeKit, Brillo and Alljoyn. In his session at @ThingsExpo, Adam Justice, vice president and general manager of Grid Connect, will review what happens when smart devices don’t work togethe...