|By Dawn Parzych||
|June 19, 2014 11:16 AM EDT||
The future of HTTP is here, or almost here. It has been 5 years since SPDY was first introduced as a better way to deliver web sites. A lot has happened since then.
- Chrome, Firefox, Opera and some IE installations support SPDY.
- SPDY evolved from v2 to v3 to v3.1.
- Sites like Google, Facebook, Twitter, and Wordpress to name just a few are available via SPDY.
- F5 announced availability of a SPDY Gateway.
- The IETF HTTP working group announced SPDY is the starting point for HTTP/2.
- And most recently - Apple has announced that Safari 8, due out this fall, will support SPDY! This means that all major browsers will support SPDY by the end of the year.
By the end of the year all major browsers will support SPDY, and the IETF is scheduled to have the HTTP/2 draft finalized. This week the IETF working group published the latest draft of the HTTP/2 spec. The hope is that this will be the version that becomes the proposed RFC.
The Internet Explorer team posted a blog at the end of May indicating that they have HTTP/2 in development for a future version of IE, there is no commitment whether this will be in IE 12 or another version but they are preparing for the shift. We at F5, have been following the evolution of the spec and developing prototypes based on the various interoperability drafts to make sure we are ready as soon as possible to implement an HTTP/2 gateway. So what are you waiting for, why are you not using SPDY on your site?
Using SPDY today allows you to see how HTTP/2 may potentially impact your applications and infrastructure. HTTP/2 is not a new protocol, there are no changes to the HTTP semantics and it does not obsolete the existing HTTP/1.1 message syntax. If it’s not a new protocol and it doesn’t obsolete HTTP/1.1 what is HTTP/2 exactly? Per the draft’s abstract:
This specification describes an optimized expression of the syntax of the Hypertext Transfer Protocol (HTTP). HTTP/2 enables a more efficient use of network resources and a reduced perception of latency by introducing header field compression and allowing multiple concurrent messages on the same connection. It also introduces unsolicited push of representations from servers to clients. This specification is an alternative to, but does not obsolete, the HTTP/1.1 message syntax. HTTP's existing semantics remain unchanged.
HTTP/2 allows communication to occur with less data transmitted over the network and with the ability to send multiple requests and responses across a single connection, out of order and interleaved – oh yeah and all over SSL.
Let’s look at these in a little more detail. Sending less data has always been a good thing but just how much improvement can be achieved by compressing headers. It turns out quite a bit. Headers have a lot of repetitive information in them: the cookies, encoding types, cache settings to name just a few. With all this repetitive information compression can really help. Looking at the amount of downloaded data for a web page delivered over HTTP and over SPDY we can see just how much savings can be achieved. Below is a sample of 10 objects delivered over HTTP and SPDY, the byte savings result in a total savings of 1762 bytes. That doesn’t sound like much but we’re only talking about 10 objects. The average home page now has close to 100 objects on it, and I’m sure the total number of hits to your website is well over that number. If your website gets 1 million hits a day then extrapolating this out the savings become 168 MB, if the hits are closer to 10 million the savings nears 1.7 GB. Over the course of a month or a year these savings will start to add up.
SPDY performed header compression via deflate, this was discovered to be vulnerable to CRIME attacks, as a result HTTP/2 uses HPACK header compression, an HTTP header specific compression scheme which is not vulnerable to CRIME.
The next element to examine is the ability to send multiple requests and response across a single connection, out of order and interleaved. We all know that latency can have a big impact on page load times and the end user experience. This is why HTTP 1.1 allowed for keep-alives, eliminating the need to perform a three way handshake for each and every request. After keep alives came, domain sharding and browsers eventually changed the default behavior to allow more than 2 concurrent TCP connections. The downside of multiple TCP connections is having to conduct the three way handshake multiple times, wouldn’t things be easier if all requests could just be sent over a single TCP connection. This is what HTTP/2 provides, and not only that the responses can be returned in a different order in which they were reqeusted.
Now onto the SSL component. HTTP/2 requires strong crypto –128 bit EC or 2048 bit RSA. This requirement will be enforced by browsers and cannot be disabled. With the ever growing number of attacks having SSL everywhere is a good thing but there are performance and reporting ramifications to encrypting all data. Organizations that deploy solutions to monitor, classify and analyze Internet traffic may no longer be able to do so.
All the changes coming in HTTP/2 have the potential to impact how an application is rendered and how infrastructure components will react. What are the consequences of having all requests and responses transmitted over SSL, can the network support 50 concurrent requests for objects, does the page render properly for the end user if objects are received out of order? On the positive you could end up with improved page load times and a reduction in the amount of data transferred, stop waiting and start enabling the future of the web today.
For IoT to grow as quickly as analyst firms’ project, a lot is going to fall on developers to quickly bring applications to market. But the lack of a standard development platform threatens to slow growth and make application development more time consuming and costly, much like we’ve seen in the mobile space. In his session at @ThingsExpo, Mike Weiner, Product Manager of the Omega DevCloud with KORE Telematics Inc., discussed the evolving requirements for developers as IoT matures and conducted a live demonstration of how quickly application development can happen when the need to comply wit...
Jul. 31, 2015 08:45 AM EDT Reads: 305
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 Architect for the Internet of Things and Intelligent Systems, described how to revolutionize your archit...
Jul. 30, 2015 07:30 PM EDT Reads: 1,403
SYS-CON Events announced today that HPM Networks will exhibit at the 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. For 20 years, HPM Networks has been integrating technology solutions that solve complex business challenges. HPM Networks has designed solutions for both SMB and enterprise customers throughout the San Francisco Bay Area.
Jul. 30, 2015 03:45 PM EDT Reads: 458
MuleSoft has announced the findings of its 2015 Connectivity Benchmark Report on the adoption and business impact of APIs. The findings suggest traditional businesses are quickly evolving into "composable enterprises" built out of hundreds of connected software services, applications and devices. Most are embracing the Internet of Things (IoT) and microservices technologies like Docker. A majority are integrating wearables, like smart watches, and more than half plan to generate revenue with APIs within the next year.
Jul. 30, 2015 02:30 PM EDT Reads: 108
The Internet of Everything (IoE) brings together people, process, data and things to make networked connections more relevant and valuable than ever before – transforming information into knowledge and knowledge into wisdom. IoE creates new capabilities, richer experiences, and unprecedented opportunities to improve business and government operations, decision making and mission support capabilities.
Jul. 30, 2015 01:45 PM EDT Reads: 273
Growth hacking is common for startups to make unheard-of progress in building their business. Career Hacks can help Geek Girls and those who support them (yes, that's you too, Dad!) to excel in this typically male-dominated world. Get ready to learn the facts: Is there a bias against women in the tech / developer communities? Why are women 50% of the workforce, but hold only 24% of the STEM or IT positions? Some beginnings of what to do about it! In her Opening Keynote at 16th Cloud Expo, Sandy Carter, IBM General Manager Cloud Ecosystem and Developers, and a Social Business Evangelist, d...
Jul. 30, 2015 12:00 PM EDT Reads: 2,061
In his keynote at 16th Cloud Expo, Rodney Rogers, CEO of Virtustream, discussed the evolution of the company from inception to its recent acquisition by EMC – including personal insights, lessons learned (and some WTF moments) along the way. Learn how Virtustream’s unique approach of combining the economics and elasticity of the consumer cloud model with proper performance, application automation and security into a platform became a breakout success with enterprise customers and a natural fit for the EMC Federation.
Jul. 30, 2015 09:00 AM EDT Reads: 2,163
The Internet of Things is not only adding billions of sensors and billions of terabytes to the Internet. It is also forcing a fundamental change in the way we envision Information Technology. For the first time, more data is being created by devices at the edge of the Internet rather than from centralized systems. What does this mean for today's IT professional? In this Power Panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, panelists addressed this very serious issue of profound change in the industry.
Jul. 29, 2015 03:00 PM EDT Reads: 1,274
Discussions about cloud computing are evolving into discussions about enterprise IT in general. As enterprises increasingly migrate toward their own unique clouds, new issues such as the use of containers and microservices emerge to keep things interesting. In this Power Panel at 16th Cloud Expo, moderated by Conference Chair Roger Strukhoff, panelists addressed the state of cloud computing today, and what enterprise IT professionals need to know about how the latest topics and trends affect their organization.
Jul. 29, 2015 02:00 PM EDT Reads: 1,185
It is one thing to build single industrial IoT applications, but what will it take to build the Smart Cities and truly society-changing applications of the future? The technology won’t be the problem, it will be the number of parties that need to work together and be aligned in their motivation to succeed. In his session at @ThingsExpo, Jason Mondanaro, Director, Product Management at Metanga, discussed how you can plan to cooperate, partner, and form lasting all-star teams to change the world and it starts with business models and monetization strategies.
Jul. 28, 2015 04:30 PM EDT Reads: 1,765
Converging digital disruptions is creating a major sea change - Cisco calls this the Internet of Everything (IoE). IoE is the network connection of People, Process, Data and Things, fueled by Cloud, Mobile, Social, Analytics and Security, and it represents a $19Trillion value-at-stake over the next 10 years. In her keynote at @ThingsExpo, Manjula Talreja, VP of Cisco Consulting Services, discussed IoE and the enormous opportunities it provides to public and private firms alike. She will share what businesses must do to thrive in the IoE economy, citing examples from several industry sectors.
Jul. 28, 2015 11:00 AM EDT Reads: 2,043
There will be 150 billion connected devices by 2020. New digital businesses have already disrupted value chains across every industry. APIs are at the center of the digital business. You need to understand what assets you have that can be exposed digitally, what their digital value chain is, and how to create an effective business model around that value chain to compete in this economy. No enterprise can be complacent and not engage in the digital economy. Learn how to be the disruptor and not the disruptee.
Jul. 27, 2015 10:00 AM EDT Reads: 2,030
Akana has released Envision, an enhanced API analytics platform that helps enterprises mine critical insights across their digital eco-systems, understand their customers and partners and offer value-added personalized services. “In today’s digital economy, data-driven insights are proving to be a key differentiator for businesses. Understanding the data that is being tunneled through their APIs and how it can be used to optimize their business and operations is of paramount importance,” said Alistair Farquharson, CTO of Akana.
Jul. 27, 2015 09:00 AM EDT Reads: 327
Business as usual for IT is evolving into a "Make or Buy" decision on a service-by-service conversation with input from the LOBs. How does your organization move forward with cloud? In his general session at 16th Cloud Expo, Paul Maravei, Regional Sales Manager, Hybrid Cloud and Managed Services at Cisco, discusses how Cisco and its partners offer a market-leading portfolio and ecosystem of cloud infrastructure and application services that allow you to uniquely and securely combine cloud business applications and services across multiple cloud delivery models.
Jul. 27, 2015 08:00 AM EDT Reads: 1,905
The enterprise market will drive IoT device adoption over the next five years. In his session at @ThingsExpo, John Greenough, an analyst at BI Intelligence, division of Business Insider, analyzed how companies will adopt IoT products and the associated cost of adopting those products. John Greenough is the lead analyst covering the Internet of Things for BI Intelligence- Business Insider’s paid research service. Numerous IoT companies have cited his analysis of the IoT. Prior to joining BI Intelligence, he worked analyzing bank technology for Corporate Insight and The Clearing House Payment...
Jul. 26, 2015 09:00 PM EDT Reads: 1,576
"Optimal Design is a technology integration and product development firm that specializes in connecting devices to the cloud," stated Joe Wascow, Co-Founder & CMO of Optimal Design, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
Jul. 25, 2015 02:00 PM EDT Reads: 393
SYS-CON Events announced today that CommVault has been named “Bronze Sponsor” of SYS-CON's 17th International Cloud Expo®, which will take place on November 3–5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. A singular vision – a belief in a better way to address current and future data management needs – guides CommVault in the development of Singular Information Management® solutions for high-performance data protection, universal availability and simplified management of data on complex storage networks. CommVault's exclusive single-platform architecture gives companies unp...
Jul. 25, 2015 01:00 PM EDT Reads: 1,959
Electric Cloud and Arynga have announced a product integration partnership that will bring Continuous Delivery solutions to the automotive Internet-of-Things (IoT) market. The joint solution will help automotive manufacturers, OEMs and system integrators adopt DevOps automation and Continuous Delivery practices that reduce software build and release cycle times within the complex and specific parameters of embedded and IoT software systems.
Jul. 25, 2015 12:15 PM EDT Reads: 462
"ciqada is a combined platform of hardware modules and server products that lets people take their existing devices or new devices and lets them be accessible over the Internet for their users," noted Geoff Engelstein of ciqada, a division of Mars International, in this SYS-CON.tv interview at @ThingsExpo, held June 9-11, 2015, at the Javits Center in New York City.
Jul. 25, 2015 12:00 PM EDT Reads: 1,539
Internet of Things is moving from being a hype to a reality. Experts estimate that internet connected cars will grow to 152 million, while over 100 million internet connected wireless light bulbs and lamps will be operational by 2020. These and many other intriguing statistics highlight the importance of Internet powered devices and how market penetration is going to multiply many times over in the next few years.
Jul. 25, 2015 09:00 AM EDT Reads: 1,491