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Category Archives for "Networking"

Elixir Notes: Lists

Lists are a sequence of values that are enclosed with square brackets []. Lists in Elixir are actually stored in memory as linked lists. Each element holds both its value and a pointer to the next element. Considerations To compute the length of a list, the whole list needs to be...

Elixir Notes: Types

Elixir has a number of types similar to most programming languages. Integer Integers are whole numbers. Float Floats are decimal place numbers. Boolean Booleans are true or false values. Atom Atoms are constants where the value is the same as the name of the atom. Atoms are...

Elixir Notes: Maps

Maps are used to store key/value pairs. Maps are defined with curly brackets prefixed with a percent % # Define a map with the hash rocket syntax map = % # Create a map from a list of tuples map = Map.new([ Considerations It is convention to use atoms as keys for maps. When an atom is...

Elixir Notes: Tuples

Tuples are similar to lists except they store all their elements in a contiguous memory block. Tuples are defined with the curly braces Considerations Updating or adding to tuples is expensive, because a new tuple is created in memory.

Ethernet innovation pits power against speed

While the move to 400G Ethernet has so far been a largely hyperscaler and telco-network event, the ambition for those users, as well as data-center customers is ultimately to  move to at least 800Gbps and possibly 1.6Tbps.And while 800Gbps seems to be a solid goal for Ethernet networking visionaries, the challenges—such as the optics, power, and architecture required to make the next speed leap—seem formidable.The need for increased speed in data centers and cloud services is driven by myriad things including the continued growth of hyperscale networks from players like Google, Amazon and Facebook, but also the more distributed cloud, artificial intelligence, video, and mobile-application workloads that current and future networks will support.To read this article in full, please click here

Ethernet innovation pits power against speed

While the move to 400G Ethernet has so far been a largely hyperscaler and telco-network event, the ambition for those users, as well as data-center customers is ultimately to  move to at least 800Gbps and possibly 1.6Tbps.And while 800Gbps seems to be a solid goal for Ethernet networking visionaries, the challenges—such as the optics, power, and architecture required to make the next speed leap—seem formidable.The need for increased speed in data centers and cloud services is driven by myriad things including the continued growth of hyperscale networks from players like Google, Amazon and Facebook, but also the more distributed cloud, artificial intelligence, video, and mobile-application workloads that current and future networks will support.To read this article in full, please click here

Observe VM Service Meshes with Apache SkyWalking and the Envoy Access Log Service

Tetrate sponsored this post. Hongtao Gao Hongtao is a Tetrate engineer and former Huawei Cloud expert. One of PMC members of Apache SkyWalking, he participates in such popular open source projects as Apache ShardingSphere and Elastic-Job. Want to observe a service mesh that extends to virtual machines? A new analyzer in previous article, we talked about observability of service mesh in a Kubernetes environment and applied it to the bookinfo application in practice. But in that scenario, in order to map IP addresses to services, SkyWalking would need access to service metadata from a Kubernetes cluster — which is not available for services deployed in VMs. In this tutorial, we’ll demonstrate how SkyWalking’s new analyzer can give you better observability of a mesh that includes virtual machines. How It Works What makes VMs different from Kubernetes is that, for VM services, there are no places where we can fetch the metadata to map the IP addresses to services. The mechanics of SkyWalking Analyzer are the same Continue reading

IPv6 Buzz 068: Addressing The New Federal IPv6-Only Mandate

In this week's IPv6 Buzz episode Ed, Scott, and Tom talk about the likely impacts of the latest IPv6 mandate from the federal government, which directs that 80% of each fed network be IPv6-only by 2025. Our guest is Nick Buraglio. Nick is a network architect and technical analyst with the Energy Sciences Network and has decades of experience working in and on government nets.

The post IPv6 Buzz 068: Addressing The New Federal IPv6-Only Mandate appeared first on Packet Pushers.

IPv6 Buzz 068: Addressing The New Federal IPv6-Only Mandate

In this week's IPv6 Buzz episode Ed, Scott, and Tom talk about the likely impacts of the latest IPv6 mandate from the federal government, which directs that 80% of each fed network be IPv6-only by 2025. Our guest is Nick Buraglio. Nick is a network architect and technical analyst with the Energy Sciences Network and has decades of experience working in and on government nets.

Lossless Cloud-Native Networking – Video

Day Two Cloud podcast co-host Ned Bellavance asks Envoy creator Matt Klein about the cloud-native networking complexity, autoscaling dynamically, overcoming failure states, and achieving losslessness. Hear this entire discussion on Episode 82 of the Day Two Cloud podcast, published January 27, 2021. You can subscribe to the Packet Pushers’ YouTube channel for more videos as […]

The post Lossless Cloud-Native Networking – Video appeared first on Packet Pushers.

ExaGrid updates and streamlines its backup appliances

I'm a sucker for the underdog, so shame on me for focusing on the big guys for so long. It's time to change that with some news from ExaGrid, a competitor of Dell EMC and HP Enterprise in the data backup appliance market.Earlier this month, ExaGrid announced it has increased the capacity of its Tiered Backup Storage appliances while also reducing its offerings from nine systems to seven. Appliances of any size can be mixed and matched in a cluster of up to 32 appliances.ExaGrid also changed the naming convention of the appliances to better reflect their capacity. For example, the discontinued bottom-of-the-line EX3000 had 3TB of full backup capacity, while the new bottom-end appliance is the EX6, with 6TB of full backup capacity storage.To read this article in full, please click here

BGP: What is border gateway protocol, and how does it work?

Finding the best way to get from Point A to Point B is easy if you’re drawing a straight line on a piece of paper, but when Point A is your computer and Point B is a website halfway around the world, things get a bit trickier.In the latter case, Border Gateway Protocol (BGP), the routing protocol used by the global internet, is used to find the best path by weighing the latest network conditions based on reachability and routing information. BGP manages how data packets get delivered between the large networks that make up the internet and makes it possible for the internet as we know it to operate efficiently.What is Border Gateway Protocol? BGP has been called the glue of the Internet and the postal service of the internet. One comparison likens BGP to GPS applications on mobile phones. If you were driving from Boston to Los Angeles, the GPS app decides the best route possible using existing knowledge of road conditions, traffic jams, and whether you want to travel on a toll road. Sometimes, the shortest path is not always the best path. BGP is like having a continuously updated map of the internet from Continue reading

ExaGrid updates and streamlines its backup appliances

I'm a sucker for the underdog, so shame on me for focusing on the big guys for so long. It's time to change that with some news from ExaGrid, a competitor of Dell EMC and HP Enterprise in the data backup appliance market.Earlier this month, ExaGrid announced it has increased the capacity of its Tiered Backup Storage appliances while also reducing its offerings from nine systems to seven. Appliances of any size can be mixed and matched in a cluster of up to 32 appliances.ExaGrid also changed the naming convention of the appliances to better reflect their capacity. For example, the discontinued bottom-of-the-line EX3000 had 3TB of full backup capacity, while the new bottom-end appliance is the EX6, with 6TB of full backup capacity storage.To read this article in full, please click here

Data Privacy Day 2021 – Looking ahead at the always on, always secure, always private Internet

Data Privacy Day 2021 - Looking ahead at the always on, always secure, always private Internet
Data Privacy Day 2021 - Looking ahead at the always on, always secure, always private Internet

Welcome to Data Privacy Day 2021! Last year at this time, I was writing about how Cloudflare builds privacy into everything we do, with little idea about how dramatically the world was going to change. The tragedy of the COVID-19 pandemic has reshaped the way we go about our daily lives. Our dependence on the Internet grew exponentially in 2020 as we started working from home, attending school from home, and participating in online weddings, concerts, parties, and more. So as we begin this new year, it’s impossible to think about data privacy in 2021 without thinking about how an always-on, always secure, always private Internet is more important than ever.

The pandemic wasn’t the only thing to dramatically shape data privacy conversations last year. We saw a flurry of new activity on data protection legislation around the globe, and a trend toward data localization in a variety of jurisdictions.

I don’t think I’m taking any risks when I say that 2021 looks to be another busy year in the world of privacy and data protection. Let me tell you a bit about what that looks like for us at Cloudflare. We’ll be spending a lot of time in Continue reading

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