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Category Archives for "Networking"

Wi-Fi 6 Is A Stupid Branding Idea

You’ve probably seen recently that the Wi-Fi Alliance has decided the rebrand the forthcoming 802.11ax standard as “Wi-Fi CERTIFIED 6”, henceforth referred to as “Wi-Fi 6”. This branding decision happened late in 2018 and seems to be picking up steam in 2019 as 802.11ax comes closer to ratification later this year. With manufacturers shipping 11ax access points already and the consumer market poised to explode with the adoption of a new standard, I think it’s time to point out to the Wi-Fi Alliance that this is a dumb branding idea.

My Generation

On the surface, the branding decision looks like it makes sense. The Wi-Fi alliance wants to make sure that consumers aren’t confused about which wireless standard they are using. 802.11n, 802.11ac, and 802.11ax are all usable and valid infrastructure that could be in use at any one time, as 11n is 2.4GHz, 11ac is 5GHz, and 11ax encompasses both. According to the alliance, there will be a number displayed on the badge of the connection to denote which generation of wireless the client is using.

Except, it won’t be that simple. Users don’t care about speeds. They care about having the biggest Continue reading

Overview of Network Automation Mechanisms

I know many networking engineers who went into networking because they didn’t want to write code the rest of their lives. I also know a few awesome engineers who decided to keep coding while designing networks.

Andrea Dainese (author of UNetLab – the tool you might know as EVE-NG) is one of the latter and practiced network automation for years, dealing with all sorts of crappy device configuration and monitoring mechanisms, from screen- and web scraping to broken REST APIs.

He decided to write a series of articles describing individual mechanisms, starting with an overview and zero-touch provisioning.

Continue reading

How to monitor activity on your Linux server

Linux systems provide a number of commands that make it easy to report on system activity. In this post, we're going to look at several commands that are especially helpful.The watch command The watch command is one that makes it easy to repeatedly examine a variety of data on your system — user activities, running processes, logins, memory usage, etc. All the command really does is run the command that you specify repeatedly, each time overwriting the previously displayed output, but this lends itself to a very convenient way of monitoring what's happening on your system. [ Two-Minute Linux Tips: Learn how to master a host of Linux commands in these 2-minute video tutorials ] To start with a very basic and not particularly useful command, you could run watch -n 5 date and see a display with the current date and time that updates every 5 seconds. As you likely have guessed, the -n 5 option specifies the number of seconds to wait between each run of the command. The default is 2 seconds. The command will run and update a display like this until you stop it with a ^c.To read this article in full, please Continue reading

How to monitor activity on your Linux server

Linux systems provide a number of commands that make it easy to report on system activity. In this post, we're going to look at several commands that are especially helpful.The watch command The watch command is one that makes it easy to repeatedly examine a variety of data on your system — user activities, running processes, logins, memory usage, etc. All the command really does is run the command that you specify repeatedly, each time overwriting the previously displayed output, but this lends itself to a very convenient way of monitoring what's happening on your system. [ Two-Minute Linux Tips: Learn how to master a host of Linux commands in these 2-minute video tutorials ] To start with a very basic and not particularly useful command, you could run watch -n 5 date and see a display with the current date and time that updates every 5 seconds. As you likely have guessed, the -n 5 option specifies the number of seconds to wait between each run of the command. The default is 2 seconds. The command will run and update a display like this until you stop it with a ^c.To read this article in full, please Continue reading

How to monitor activity on your Linux server

Linux systems provide a number of commands that make it easy to report on system activity. In this post, we're going to look at several commands that are especially helpful.The watch command The watch command is one that makes it easy to repeatedly examine a variety of data on your system — user activities, running processes, logins, memory usage, etc. All the command really does is run the command that you specify repeatedly, each time overwriting the previously displayed output, but this lends itself to a very convenient way of monitoring what's happening on your system. [ Two-Minute Linux Tips: Learn how to master a host of Linux commands in these 2-minute video tutorials ] To start with a very basic and not particularly useful command, you could run watch -n 5 date and see a display with the current date and time that updates every 5 seconds. As you likely have guessed, the -n 5 option specifies the number of seconds to wait between each run of the command. The default is 2 seconds. The command will run and update a display like this until you stop it with a ^c.To read this article in full, please Continue reading

Time to stock up on memory; prices to fall 20% this quarter

Contract prices for server DRAM are expected to fall by more than 20 percent this quarter over the same period in 2018, even more than the earlier forecast of 15 percent, reports DRAMeXchange, a division of TrendForce.The demand outlook remains weak due to high inventory levels, seasonal buying patterns, a tapering in demand, and uncertainties over the U.S-China trade war and the possibility of tariffs.Mark Liu, senior analyst at DRAMeXchange, said the main reason for price decline is because DRAM makers are having difficulty reducing inventory. The DRAM suppliers’ fulfillment rate went from 90 percent last quarter to 120 percent in this quarter, which means there is an oversupply.To read this article in full, please click here

Time to stock up on memory; prices to fall 20% this quarter

Contract prices for server DRAM are expected to fall by more than 20 percent this quarter over the same period in 2018, even more than the earlier forecast of 15 percent, reports DRAMeXchange, a division of TrendForce.The demand outlook remains weak due to high inventory levels, seasonal buying patterns, a tapering in demand, and uncertainties over the U.S-China trade war and the possibility of tariffs.Mark Liu, senior analyst at DRAMeXchange, said the main reason for price decline is because DRAM makers are having difficulty reducing inventory. The DRAM suppliers’ fulfillment rate went from 90 percent last quarter to 120 percent in this quarter, which means there is an oversupply.To read this article in full, please click here

Time to stock up on memory; prices to fall 20% this quarter

Contract prices for server DRAM are expected to fall by more than 20 percent this quarter over the same period in 2018, even more than the earlier forecast of 15 percent, reports DRAMeXchange, a division of TrendForce.The demand outlook remains weak due to high inventory levels, seasonal buying patterns, a tapering in demand, and uncertainties over the U.S-China trade war and the possibility of tariffs.Mark Liu, senior analyst at DRAMeXchange, said the main reason for price decline is because DRAM makers are having difficulty reducing inventory. The DRAM suppliers’ fulfillment rate went from 90 percent last quarter to 120 percent in this quarter, which means there is an oversupply.To read this article in full, please click here

create-cloudflare-worker: Bootstrap your Cloudflare Worker

create-cloudflare-worker: Bootstrap your Cloudflare Worker

This is a guest post by Tejas Dinkar, who is the Head of Engineering at Quintype, a platform for digital publishing. He’s continually looking for ways to make applications run faster and cheaper. You can find him on Github and Twitter.

create-cloudflare-worker: Bootstrap your Cloudflare Worker
Image by Rakicefic Nenad 

TL;DR: Check out create-cloudflare-worker.

At Quintype, we are continually looking for new and innovative ways to use our CDN. Quintype moved to Cloudflare last year, partly because of the power of Cloudflare Workers. Workers have been a very important tool in our belt, and in this blog post we will talk a little bit about our worker development lifecycle.

Cloudflare Workers have drastically changed the way we architect and deploy things at Quintype. Quintype is a platform that powers many publishers, including many high volume ones like The Quint, BloombergQuint, Swarajya, and Fortune India. An average month sees hundreds of millions of page views come through our network.

Maintaining a healthy cache hit ratio is the key to scaling a content heavy app. Ensuring requests are served from Cloudflare is faster, and cheaper, as requests do not have to come through to an origin. We actively architect our apps to ensure that we Continue reading

Day Two Cloud 001: Building A Business On Azure

Welcome to the first episode of Day Two Cloud, a new podcast that punctures the marketing hype and digs into the real work required to make the public cloud work for you. My guest Tim Warner walks us through a real-world application migration to Azure and shares lessons learned on scale, automation, and cost control.

The post Day Two Cloud 001: Building A Business On Azure appeared first on Packet Pushers.

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