|By Lori MacVittie||
|November 3, 2016 08:00 AM EDT||
It was a Monday. I was reading the Internet. Okay, I was skimming feeds. Anyway, I happened across a title that intrigued me, "Stateful Apps and Containers: Squaring the Circle." It had all the right buzzwords (containers) and mentioned state, a topic near and dear to this application networking-oriented gal, so I happily clicked on through.
Turns out that Stateful Apps are not Stateful Apps. Seriously.
To be fair, I should really say that when a devops guy talks about ‘stateful apps' it is not the same thing as when a netops gal uses the term ‘stateful apps.' That's because the devops guy is referring to persistent data storage for applications. File systems, databases, etc... When a netops gal talks about stateful apps, they're talking about the unique characteristics that identify existing TCP connections between two systems, like a client and an app. Devops thinks in terms of app data, netops about network data.
Devops and netops speak different languages that use the same word to mean different things. It's like English. No big deal.
The thing is that this may seem like a minor issue to be worried about. But then I got thinking about emerging application architectures like microservices and the dominance of APIs and the urgency with which everyone is moving to secure HTTP traffic. And I realized that actually, it is a pretty big deal, because it's a clash of ops. While devops is over there, building stateless architectures based on the newest theories and principles of scalability, we're requiring security that basically negates many of the benefits we might have seen.
That's because the nature of public key cryptography requires state in the network.
Here Comes the (Computer) Science
Public key infrastructure (PKI) is based on a fairly simple premise that information is exchanged between two endpoints (client and app) that is unique to that connection. That means any subsequent exchanges have to be made between the two endpoints that established that connection.
That's stateful networking.
Even if your entire architecture is based on stateless microservices, once you add security (SSL/TLS), it's stateful. Whamo! Just like that. And that impacts scale. Because now you've got to figure out how best to distribute traffic based on how loaded any given instance of that app might be.
And you probably don't want to be renegotiating secure sessions for every, single, interaction. You don't. I don't care how much faster HTTP/2 is, or how much better ECC is over previous generations of cryptography (spoiler: quite a bit better), there is still significant latency by the process of negotiating that connection. There's the overhead of establishing the underlying TCP session and then the security negotiations. That adds latency thanks to all those round trips back and forth, which means slower application response times. Especially on mobile devices.
So what? You might say. It's measured in milliseconds, that can't possibly impact the application experience.
But it does. Milliseconds matter, especially today, when digital natives who've never experienced what 2800bps feels like want their apps to respond instantaneously, with LAN-like performance.
What that means is that adding that layer of security (which is - or should be - a requirement) effectively turns your elegant, stateless architecture into a stateful one.
This is why architecture matters. Because it's no longer a matter of throwing a load balancer in front of those services and picking an algorithm, it's about extending the app architecture into the network, upstream, and understanding the advantages of terminating that security before it gets all that "state" in your "stateless" architecture. If the load balancer (or ADC if you prefer) is terminating SSL/TLS, then it has to manage the negotiation, and the back and forth with clients. That means it's free (if it's a modern proxy-based solution) to interact in with services in the back-end the way dev intended: statelessly.
The thing to be aware of is that when app architectures and network architectures meet, they can often clash and effectively negate all the goodness intended by the new app architecture in the first place. DevOps is as much about communication between groups as it is automating the processes between them. That means understanding the impact of the network on apps, and vice versa and agreeing on an architecture that preserves the best characteristics of the app architecture without sacrificing network speed or security.
SYS-CON Events announced today that Cloudistics, an on-premises cloud computing company, 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. Cloudistics delivers a complete public cloud experience with composable on-premises infrastructures to medium and large enterprises. Its software-defined technology natively converges network, storage, compute, virtualization, and management into a single platform to drive unprecedented simplicity in the data center. Customers can start with a base infrastructure and scale to multi-site and multi-geo infrastructures with predictable economics and performance.
Mar. 23, 2017 10:45 AM EDT Reads: 1,279
SYS-CON Events announced today that Infranics 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. Since 2000, Infranics has developed SysMaster Suite, which is required for the stable and efficient management of ICT infrastructure. The ICT management solution developed and provided by Infranics continues to add intelligence to the ICT infrastructure through the IMC (Infra Management Cycle) based on mathematical analysis and forecasting Big Data Analyze and Control.
Mar. 23, 2017 09:30 AM EDT Reads: 2,409
Virtualization over the past years has become a key strategy for IT to acquire multi-tenancy, increase utilization, develop elasticity and improve security. And virtual machines (VMs) are quickly becoming a main vehicle for developing and deploying applications. The introduction of containers seems to be bringing another and perhaps overlapped solution for achieving the same above-mentioned benefits. Are a container and a virtual machine fundamentally the same or different? And how? Is one technically superior to the other? What about performance and security? Does IT need either one, or both?
Mar. 23, 2017 08:30 AM EDT Reads: 2,582
SYS-CON Events announced today that SoftLayer, an IBM Company, has been named “Gold Sponsor” of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2016, at the Javits Center in New York, New York. SoftLayer, an IBM Company, provides cloud infrastructure as a service from a growing number of data centers and network points of presence around the world. SoftLayer’s customers range from Web startups to global enterprises.
Mar. 23, 2017 08:00 AM EDT Reads: 866
Have you ever noticed how some IT people seem to lead successful, rewarding, and satisfying lives and careers, while others struggle? IT author and speaker Don Crawley uncovered the five principles that successful IT people use to build satisfying lives and careers and he shares them in this fast-paced, thought-provoking webinar. You'll learn the importance of striking a balance with technical skills and people skills, challenge your pre-existing ideas about IT customer service, and gain new insights into how to build your own satisfying and rewarding career by rising above the ordinary and mundane to build an extraordinary life and career as a world-class Compassionate Geek.
Mar. 23, 2017 08:00 AM EDT Reads: 1,985
Keeping pace with advancements in software delivery processes and tooling is taxing even for the most proficient organizations. Point tools, platforms, open source and the increasing adoption of private and public cloud services requires strong engineering rigor - all in the face of developer demands to use the tools of choice. As Agile has settled in as a mainstream practice, now DevOps has emerged as the next wave to improve software delivery speed and output. To make DevOps work, organizations must focus on what is most relevant to deliver value, reduce IT complexity, create more repeatable agile-based processes and leverage increasingly secure and stable, cloud-based infrastructure platforms.
Mar. 23, 2017 07:45 AM EDT Reads: 996
SYS-CON Events announced today that T-Mobile 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. As America's Un-carrier, T-Mobile US, Inc., is redefining the way consumers and businesses buy wireless services through leading product and service innovation. The Company's advanced nationwide 4G LTE network delivers outstanding wireless experiences to 67.4 million customers who are unwilling to compromise on quality and value.
Mar. 23, 2017 06:45 AM EDT Reads: 1,512
What if you could build a web application that could support true web-scale traffic without having to ever provision or manage a single server? Sounds magical, and it is! In his session at 20th Cloud Expo, Chris Munns, Senior Developer Advocate for Serverless Applications at Amazon Web Services, will show how to build a serverless website that scales automatically using services like AWS Lambda, Amazon API Gateway, and Amazon S3. We will review several frameworks that can help you build serverless applications, such as the AWS Serverless Application Model (AWS SAM), Chalice, and ClaudiaJS.
Mar. 23, 2017 05:30 AM EDT Reads: 1,294
The essence of cloud computing is that all consumable IT resources are delivered as services. In his session at 15th Cloud Expo, Yung Chou, Technology Evangelist at Microsoft, demonstrated the concepts and implementations of two important cloud computing deliveries: Infrastructure as a Service (IaaS) and Platform as a Service (PaaS). He discussed from business and technical viewpoints what exactly they are, why we care, how they are different and in what ways, and the strategies for IT to transition into and take advantages of these emerging service models.
Mar. 23, 2017 05:00 AM EDT Reads: 5,738
Culture is the most important ingredient of DevOps. The challenge for most organizations is defining and communicating a vision of beneficial DevOps culture for their organizations, and then facilitating the changes needed to achieve that. Often this comes down to an ability to provide true leadership. As a CIO, are your direct reports IT managers or are they IT leaders? The hard truth is that many IT managers have risen through the ranks based on their technical skills, not their leadership ability. Many are unable to effectively engage and inspire, creating forward momentum in the direction of desired change. Renowned for its approach to leadership and emphasis on their people, organizations increasingly look to our military for insight into these challenges.
Mar. 23, 2017 05:00 AM EDT Reads: 10,532
SYS-CON Events announced today that CA Technologies has been named “Platinum 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, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. CA Technologies helps customers succeed in a future where every business – from apparel to energy – is being rewritten by software. From planning to development to management to security, CA creates software that fuels transformation for companies in the application economy.
Mar. 23, 2017 04:15 AM EDT Reads: 1,022
SYS-CON Events announced today that HTBase 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. HTBase (Gartner 2016 Cool Vendor) delivers a Composable IT infrastructure solution architected for agility and increased efficiency. It turns compute, storage, and fabric into fluid pools of resources that are easily composed and re-composed to meet each application’s needs. With HTBase, companies can quickly provision resources and deploy unique, mission-critical, self-designed solutions to add-onto or create any type of infrastructure as per the business requirement. HTBase is the first company to enable a true multi-cloud strategy, enabling organizations to automate movement of data and workloads between private and public clouds. This means that organizations can now move data and workloads between pub...
Mar. 23, 2017 02:15 AM EDT Reads: 2,349
SYS-CON Events announced today that Outlyer, a monitoring service for DevOps and operations teams, 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. Outlyer is a monitoring service for DevOps and Operations teams running Cloud, SaaS, Microservices and IoT deployments. Designed for today's dynamic environments that need beyond cloud-scale monitoring, we make monitoring effortless so you can concentrate on running a better service for your users.
Mar. 23, 2017 02:00 AM EDT Reads: 3,727
SYS-CON Events announced today that MobiDev, a client-oriented software development company, will exhibit at SYS-CON's 20th International Cloud Expo®, which will take place June 6-8, 2017, at the Javits Center in New York City, NY, and the 21st International Cloud Expo®, which will take place October 31-November 2, 2017, at the Santa Clara Convention Center in Santa Clara, CA. MobiDev is a software company that develops and delivers turn-key mobile apps, websites, web services, and complex software systems for startups and enterprises. Since 2009 it has grown from a small group of passionate engineers and business managers to a full-scale mobile software company with over 200 developers, designers, quality assurance engineers, project managers in house, specializing in the world-class mobile and web development.
Mar. 23, 2017 01:15 AM EDT Reads: 3,365
SYS-CON Events announced today that Hitrons Solutions will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Hitrons Solutions Inc. is distributor in the North American market for unique products and services of small and medium-size businesses, including cloud services and solutions, SEO marketing platforms, and mobile applications.
Mar. 22, 2017 10:15 PM EDT Reads: 3,309
For organizations that have amassed large sums of software complexity, taking a microservices approach is the first step toward DevOps and continuous improvement / development. Integrating system-level analysis with microservices makes it easier to change and add functionality to applications at any time without the increase of risk. Before you start big transformation projects or a cloud migration, make sure these changes won’t take down your entire organization.
Mar. 22, 2017 10:15 PM EDT Reads: 3,319
Your homes and cars can be automated and self-serviced. Why can't your storage? From simply asking questions to analyze and troubleshoot your infrastructure, to provisioning storage with snapshots, recovery and replication, your wildest sci-fi dream has come true. In his session at @DevOpsSummit at 20th Cloud Expo, Dan Florea, Director of Product Management at Tintri, will provide a ChatOps demo where you can talk to your storage and manage it from anywhere, through Slack and similar services with Tintri's web services architecture and APIs. Impress your DevOps team with smart and autonomous infrastructure.
Mar. 22, 2017 06:15 PM EDT Reads: 3,983
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm. In his Day 3 Keynote at 20th Cloud Expo, Chris Brown, a Solutions Marketing Manager at Nutanix, will explore the ways that Nutanix technologies empower teams to react faster than ever before and connect teams in ways that were either too complex or simply impossible with traditional infrastructures.
Mar. 22, 2017 02:15 PM EDT Reads: 2,250
DevOps is often described as a combination of technology and culture. Without both, DevOps isn't complete. However, applying the culture to outdated technology is a recipe for disaster; as response times grow and connections between teams are delayed by technology, the culture will die. A Nutanix Enterprise Cloud has many benefits that provide the needed base for a true DevOps paradigm.
Mar. 22, 2017 02:00 PM EDT Reads: 1,043
SYS-CON Events announced today that Ocean9will 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. Ocean9 provides cloud services for Backup, Disaster Recovery (DRaaS) and instant Innovation, and redefines enterprise infrastructure with its cloud native subscription offerings for mission critical SAP workloads.
Mar. 22, 2017 02:00 PM EDT Reads: 1,453
With major technology companies and startups seriously embracing Cloud strategies, now is the perfect time to attend @CloudExpo | @ThingsExpo, June 6-8, 2017, at the Javits Center in New York City, NY and October 31 - November 2, 2017, Santa Clara Convention Center, CA. Learn what is going on, contribute to the discussions, and ensure that your enterprise is on the right path to Digital Transformation.
Mar. 22, 2017 01:30 PM EDT Reads: 8,173
@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 development cycles that produce software that is obsolete at launch. DevOps may be disruptive, but it is essential.
Mar. 22, 2017 12:00 PM EDT Reads: 2,676
SYS-CON Events announced today that CrowdReviews.com has been named “Media 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. CrowdReviews.com is a transparent online platform for determining which products and services are the best based on the opinion of the crowd. The crowd consists of Internet users that have experienced products and services first-hand and have an interest in letting other potential buyers their thoughts on their experience.
Mar. 22, 2017 11:00 AM EDT Reads: 3,307
SYS-CON Events announced today that SD Times | BZ Media has been named “Media 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. BZ Media LLC is a high-tech media company that produces technical conferences and expositions, and publishes a magazine, newsletters and websites in the software development, SharePoint, mobile development and commercial UAV markets.
Mar. 22, 2017 09:00 AM EDT Reads: 3,967
All organizations that did not originate this moment have a pre-existing culture as well as legacy technology and processes that can be more or less amenable to DevOps implementation. That organizational culture is influenced by the personalities and management styles of Executive Management, the wider culture in which the organization is situated, and the personalities of key team members at all levels of the organization. This culture and entrenched interests usually throw a wrench in the works because of misaligned incentives.
Mar. 22, 2017 01:00 AM EDT Reads: 2,683