Welcome!

Java IoT Authors: Elizabeth White, Liz McMillan, Pat Romanski, Yeshim Deniz, Paul Simmons

Related Topics: FinTech Journal, Java IoT, @CloudExpo, @DevOpsSummit

FinTech Journal: Blog Feed Post

Which API Metrics Even Matter? By @JustinRohrman | @CloudExpo #API #Cloud

Metrics can be dangerous, but we can also use them to build a more complete story about our software

Which API Metrics Even Matter?
by Justin Rohrman

Software Measurement is a tricky business. When we all agree on what the thing we are trying to count is, like pieces of candy in a jar, it is simple. Sadly, software isn't candy in a jar.

We try to count things like bugs, or lines of code, of number of stories completed in a sprint but never agree on what any of those things are in the first place. I have been in trouble more than once in my role as a tester from having my performance judged based on number of bugs I reported in a sprint, or the number of test cases written for a release.

Metrics can be dangerous, but we can also use them to build a more complete story about our software.

Let's take a look at how metrics and APIs can go together.

User Data
Learning about our customers - how they work, how software will help them be better, and what they value - is a good start for building a product. I like knowing that we are creating new features for real people instead of personas or descriptions on a story card. There are usually important things missing though, even when I have been able to go straight to the source. Getting feedback once that code is in production can be a whole other challenge.

Gathering data from API monitoring tools about what our customers are doing can help me collect information I might have never found.

There are a few couple of data points I have found to be useful - traffic source, and user type. Most companies I have worked with in the past several years have had some sort of mobile app. Maybe it wasn't the main line of business, but it was there and it was important. Traffic source data was a way for us to see how many people were using what parts of the product, and at what points they went from mobile to desktop. When we combined that with user type, we focused in a little more on who was spending the most time where.

Software Performance
This is one place where the magic of software monitoring tools comes in to play. An API, or at least one that gets good usage, throws back a constant stream of data in the form of a HTTP response. And sometimes more than that if the developers design for deeper feedback.

There are a lot of different types of data we can be collect related to performance - server data like available memory and CPU cycles, load time data and latency in the browser, and database response time. All of these are part of the larger puzzle that is how fast or slow your product is responding. Each time I run a performance scenario and notice a difference, the big questions are how big is the change and does it matter. Sometimes the answer is the change doesn't matter at all. Collecting that data gives us the choice to make those decisions instead of waiting for the customer to tell us when something is wrong.

Imagine you are running a Black Friday ad a few days before Thanksgiving day try to drive people into your stores instead of your competitors'. You want that page to be fast enough that your potential customers don't give up but checking the site every few minutes isn't realistic.

API Metrics

Over the course of that few days, we can check metrics like median throughput, API call volume, and throughput distribution by endpoint can help shape our understanding. This information might point to one Amazon ec2 instance running slow that needs load balancing, or maybe a virtual machine that needs better memory allocation. Either way, the data collection may have saved the ad from being inaccessible at a bad time.

Software performance is a tricky thing. There are a lot of different aspects to think about like the database, server resources, code optimization, and technologies used in the user interface. With performance testing efforts, the feedback loop is usually at the release level at best. So every two or more weeks, new information about how performance has changed comes into view. We get that information in the middle of a probably already stacked sprint, so the earliest something gets done is the next spring. That is a long lag between discovery and action.

Error Data

I test APIs so that hopefully when we push to production everyone is happy and nothing unexpected happens. Software is tricky though, we can never imagine all the ways our customers will use our products and the ways things might go wrong. And so occasionally things do go wrong, pages don't submit when someone clicks the save button and lists of data fail to load. One of the nice things about APIs is that stream of data we get back. Each time a page fails to submit, or a list of data doesn't load correctly we get some data back.

Seeing an error once might be a fluke, seeing an error several times or at the same time every day might be something interesting to look into.

Collecting data on what has gone wrong can make people feel defensive. I have had more than one development manager that was interested in collecting information on problems found in production. The idea was that they could get a better understanding of how well the testers were working out with this data. If there weren't many bugs n production then testers were doing alright, if there were a lot then someone was probably getting an unpleasant talk.

Collecting error data can be dangerous in the type of environment where it is wielded like a weapon. My personal preference is to use it as a tool for inquiry and investigation. An upward trend in error reporting can trigger studying our process, and our product to figure out how to make things better next time around.

Probably the easiest way to take metrics from complicated and dangerous to helpful is to use them as a trigger to start a deeper investigation. Seeing trends in user interface load times for a page getting slower? Set up a project to look at the page and see where it can be optimized. If error reporting gets really active at a certain time every day, maybe we should be making a call to the customer to learn about how they are using the product and see how we can better accommodate that.

Everything is information, we just need to make it useful.

Read the original blog entry...

More Stories By SmartBear Blog

As the leader in software quality tools for the connected world, SmartBear supports more than two million software professionals and over 25,000 organizations in 90 countries that use its products to build and deliver the world’s greatest applications. With today’s applications deploying on mobile, Web, desktop, Internet of Things (IoT) or even embedded computing platforms, the connected nature of these applications through public and private APIs presents a unique set of challenges for developers, testers and operations teams. SmartBear's software quality tools assist with code review, functional and load testing, API readiness as well as performance monitoring of these modern applications.

@ThingsExpo Stories
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at @ThingsExpo, James Kirkland, Red Hat's Chief Archi...
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...
Personalization has long been the holy grail of marketing. Simply stated, communicate the most relevant offer to the right person and you will increase sales. To achieve this, you must understand the individual. Consequently, digital marketers developed many ways to gather and leverage customer information to deliver targeted experiences. In his session at @ThingsExpo, Lou Casal, Founder and Principal Consultant at Practicala, discussed how the Internet of Things (IoT) has accelerated our abilit...
Organizations planning enterprise data center consolidation and modernization projects are faced with a challenging, costly reality. Requirements to deploy modern, cloud-native applications simultaneously with traditional client/server applications are almost impossible to achieve with hardware-centric enterprise infrastructure. Compute and network infrastructure are fast moving down a software-defined path, but storage has been a laggard. Until now.
Digital Transformation is much more than a buzzword. The radical shift to digital mechanisms for almost every process is evident across all industries and verticals. This is often especially true in financial services, where the legacy environment is many times unable to keep up with the rapidly shifting demands of the consumer. The constant pressure to provide complete, omnichannel delivery of customer-facing solutions to meet both regulatory and customer demands is putting enormous pressure on...
The best way to leverage your CloudEXPO | DXWorldEXPO presence as a sponsor and exhibitor is to plan your news announcements around our events. The press covering CloudEXPO | DXWorldEXPO will have access to these releases and will amplify your news announcements. More than two dozen Cloud companies either set deals at our shows or have announced their mergers and acquisitions at CloudEXPO. Product announcements during our show provide your company with the most reach through our targeted audienc...
JETRO showcased Japan Digital Transformation Pavilion at SYS-CON's 21st International Cloud Expo® at the Santa Clara Convention Center in Santa Clara, CA. The Japan External Trade Organization (JETRO) is a non-profit organization that provides business support services to companies expanding to Japan. With the support of JETRO's dedicated staff, clients can incorporate their business; receive visa, immigration, and HR support; find dedicated office space; identify local government subsidies; get...
DXWorldEXPO LLC announced today that ICC-USA, a computer systems integrator and server manufacturing company focused on developing products and product appliances, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. DXWordEXPO New York 2018, colocated with CloudEXPO New York 2018 will be held November 11-13, 2018, in New York City. ICC is a computer systems integrator and server manufacturing company focused on developing products and product appliances to meet a wide range of ...
@DevOpsSummit at Cloud Expo, taking place November 12-13 in New York City, NY, is co-located with 22nd international CloudEXPO | first international DXWorldEXPO and will feature technical sessions from a rock star conference faculty and the leading industry players in the world.
DXWorldEXPO LLC announced today that the upcoming DXWorldEXPO | CloudEXPO New York event will feature 10 companies from Poland to participate at the "Poland Digital Transformation Pavilion" on November 12-13, 2018.
22nd International Cloud Expo, taking place June 5-7, 2018, at the Javits Center in New York City, NY, and co-located with the 1st DXWorld Expo will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud ...
In his keynote at 19th Cloud Expo, Sheng Liang, co-founder and CEO of Rancher Labs, discussed the technological advances and new business opportunities created by the rapid adoption of containers. With the success of Amazon Web Services (AWS) and various open source technologies used to build private clouds, cloud computing has become an essential component of IT strategy. However, users continue to face challenges in implementing clouds, as older technologies evolve and newer ones like Docker c...
Business professionals no longer wonder if they'll migrate to the cloud; it's now a matter of when. The cloud environment has proved to be a major force in transitioning to an agile business model that enables quick decisions and fast implementation that solidify customer relationships. And when the cloud is combined with the power of cognitive computing, it drives innovation and transformation that achieves astounding competitive advantage.
Cloud-enabled transformation has evolved from cost saving measure to business innovation strategy -- one that combines the cloud with cognitive capabilities to drive market disruption. Learn how you can achieve the insight and agility you need to gain a competitive advantage. Industry-acclaimed CTO and cloud expert, Shankar Kalyana presents. Only the most exceptional IBMers are appointed with the rare distinction of IBM Fellow, the highest technical honor in the company. Shankar has also receive...
Michael Maximilien, better known as max or Dr. Max, is a computer scientist with IBM. At IBM Research Triangle Park, he was a principal engineer for the worldwide industry point-of-sale standard: JavaPOS. At IBM Research, some highlights include pioneering research on semantic Web services, mashups, and cloud computing, and platform-as-a-service. He joined the IBM Cloud Labs in 2014 and works closely with Pivotal Inc., to help make the Cloud Found the best PaaS.
In his Opening Keynote at 21st Cloud Expo, John Considine, General Manager of IBM Cloud Infrastructure, led attendees through the exciting evolution of the cloud. He looked at this major disruption from the perspective of technology, business models, and what this means for enterprises of all sizes. John Considine is General Manager of Cloud Infrastructure Services at IBM. In that role he is responsible for leading IBM’s public cloud infrastructure including strategy, development, and offering m...
DXWorldEXPO LLC announced today that All in Mobile, a mobile app development company from Poland, will exhibit at the 22nd International CloudEXPO | DXWorldEXPO. All In Mobile is a mobile app development company from Poland. Since 2014, they maintain passion for developing mobile applications for enterprises and startups worldwide.
Headquartered in Plainsboro, NJ, Synametrics Technologies has provided IT professionals and computer systems developers since 1997. Based on the success of their initial product offerings (WinSQL and DeltaCopy), the company continues to create and hone innovative products that help its customers get more from their computer applications, databases and infrastructure. To date, over one million users around the world have chosen Synametrics solutions to help power their accelerated business or per...
We are seeing a major migration of enterprises applications to the cloud. As cloud and business use of real time applications accelerate, legacy networks are no longer able to architecturally support cloud adoption and deliver the performance and security required by highly distributed enterprises. These outdated solutions have become more costly and complicated to implement, install, manage, and maintain.SD-WAN offers unlimited capabilities for accessing the benefits of the cloud and Internet. ...
Founded in 2000, Chetu Inc. is a global provider of customized software development solutions and IT staff augmentation services for software technology providers. By providing clients with unparalleled niche technology expertise and industry experience, Chetu has become the premiere long-term, back-end software development partner for start-ups, SMBs, and Fortune 500 companies. Chetu is headquartered in Plantation, Florida, with thirteen offices throughout the U.S. and abroad.