Docker’s Next Chapter: Advancing Developer Workflows for Modern Apps

Today we start the next chapter in the Docker story, one that’s focused on developers. That we have the opportunity to write this next chapter is thanks to you, our community, for without you we wouldn’t be here. And while our focus on developers builds on recent history, it’s a focus also grounded in Docker’s beginning.

In The Beginning

When Solomon Hykes, Docker’s founder, unveiled the Docker project in 2013, he succinctly stated the problem Docker aimed to solve as, “for a developer, shipping code to the server is hard.” To address, Docker abstracted out OS kernels’ complex container primitives, provided a developer-friendly, CLI-based workflow and defined an immutable, portable image format. The result transformed how developers work, making it much easier to build, ship and run their apps on any server. So while container primitives had existed for decades, Docker democratized them and made them as easy to use as

docker run hello-world

The rest is history. Over the last six years, Docker containerization catalyzed the growth of microservices-based applications, enabled development teams to ship apps many times faster and accelerated the migration of apps from the data center to the cloud. Far from a Docker-only effort, a Continue reading

Get 70% off NordVPN Virtual Private Network Service + 3 months free – Deal Alert

Safeguard yourself against snoops, and access blocked content with this no-log VPN service. NordVPN has discounted their popular VPN software 70%, with 3 extra months on top. Use our link and see the discount applied when you click "buy now".

Get 70% off NordVPN Virtual Private Network Service + 3 months free – Deal Alert

Safeguard yourself against snoops, and access blocked content with this no-log VPN service. NordVPN has discounted their popular VPN software 70%, with 3 extra months on top. Use our link and see the discount applied when you click "buy now".

What is edge computing and why it matters

Edge computing is transforming the way data is being handled, processed, and delivered from millions of devices around the world. The explosive growth of internet-connected devices – the IoT – along with new applications that require real-time computing power, continues to drive edge-computing systems.Faster networking technologies, such as 5G wireless, are allowing for edge computing systems to accelerate the creation or support of real-time applications, such as video processing and analytics, self-driving cars, artificial intelligence and robotics, to name a few.To read this article in full, please click here

Liqid Scores $28M Series B, CEO Touts ‘Record Profit’

Peer product reviews: IT pros evaluate 7 enterprises offerings

These downloadable reports offer objective user-contributed product evaluations to help IT decision-makers navigate the tech purchase process.

MPLS over IP Encapsulations and Comparison between MPLS over LSP

Do you need an LSP for MPLS ?

In this post, I will go through below topics. This is one of the points which network engineers struggle to understand as I have seen.

Design considerations for network mergers and acquisitions

Network mergers and acquisitions are the processes which can be seen in any type of businesses. As a network designers, our job to identify the business requirements of both existing networks and the merged network and finding best possible technical solutions for the business.

Do You Really Need Quality of Service?

Quality of service (QoS) is the overall performance of a telephony or computer network, particularly the performance seen by the users of the network.

Tier 1, Tier 2 and Tier 3 Service Providers

What is tier in the first place ? If you are dealing with Service Provider networks, you hear this term a lot. But how we define Tier 1,Tier 2 and Tier 3 Service Providers ?

What is reliability in networking?

What is reliability in networking ? Why reliability is an important design tool ? I will provide the answers of these questions with the examples in this post.

Is Fate Sharing bad thing in network design?

Is fate sharing bad thing in network design? Someone asked this question recently on my youtube channel and I want to share a post for the website followers as well.

First of all, what is fate sharing ? Below is the Wikipedia definition of fate sharing.

Packet loss with Fast Reroute!

Do we still lose packet with fast reroute? One of my students asked me this question. And I would like to share the answer with everyone.

I discussed some IP Mobility solutions including LISP!

Couple days ago I discussed some IP Mobility solutions, including LISP (Locator Identity Separation Protocol) with the CCDE students.

CCDE Before and After!

Don’t expect technical topic in this post. Instead I wanted to show how was my situation before and after the CCDE – Cisco Certified Design Expert !. Enjoy

Fast Convergence and the Fast Reroute – Definitions/Design Considerations in IP and MPLS

Fast Convergence and the Fast Reroute Network reliability is an important design aspect for deployability of time and loss sensitive applications. When a link, node or SRLG failure occurs in a routed network, there is inevitably a period of disruption to the delivery of traffic until the network reconverges on the new topology.

TIP Plugs Critical Mass, Expands Community Labs

Can We Really Use Millions of VXLAN Segments?

One of my readers sent me a question along these lines…

VXLAN Network Identifier is 24 bit long, giving 16 us million separate segments. However, we have to map VNI into VLANs on most switches. How can we scale up to 16 million segments when we have run out of VLAN IDs? Can we create a separate VTEP on the same switch?

VXLAN is just an encapsulation format and does not imply any particular switch architecture. What really matters in this particular case is the implementation of the MAC forwarding table in switching ASIC.

Scaling symbolic evaluation for automated verification of systems code with Serval

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., SOSP’19

Serval is a framework for developing automated verifiers of systems software. It makes an interesting juxtaposition to the approach Google took with Snap that we looked at last time out. I’m sure that Google engineers do indeed take extreme care when building the low level networking code that powers Google’s datacenters, but their fundamental design point was to enable frequent releases for fast iteration, feedback on their designs, and yes, early detection of problems.

Formal verification is at the other end of the spectrum. In theory it enables you to eliminate whole classes of problems and vulnerabilities entirely (in practice perfection is still hard to come by), and so it can be especially valuable in security sensitive situations. But it comes with a very high price tag:

Writing proofs requires a time investment that is usually measured in person-years, and the size of the proofs can be several times or even more that an order of magnitude larger than that of implementation code.

That’s both very expensive and an incredibly long wait for feedback. To invest in formally modelling something, you really Continue reading

Why your providers should support IPv6

As enterprises rely more on cloud, colocation and hosting providers, they should check whether their services support IPv6, which can provide better experiences for their customers, partners, suppliers, vendors and employees.Here is a look at how three top infrastructure-as-a-service (IaaS) providers – Amazon Web Services, Microsoft Azure and Google Cloud Platform - stack up for IPv6. There are other IPv6-capable public cloud service providers, but we mention these three to show that there is a broad spectrum of IPv6 capabilities even among the behemoth public clouds.To read this article in full, please click here