Building a To-Do List with Workers and KV

In this tutorial, we’ll build a todo list application in HTML, CSS and JavaScript, with a twist: all the data should be stored inside of the newly-launched Workers KV, and the application itself should be served directly from Cloudflare’s edge network, using Cloudflare Workers.

To start, let’s break this project down into a couple different discrete steps. In particular, it can help to focus on the constraint of working with Workers KV, as handling data is generally the most complex part of building an application:

1. Build a todos data structure
2. Write the todos into Workers KV
3. Retrieve the todos from Workers KV
4. Return an HTML page to the client, including the todos (if they exist)
5. Allow creation of new todos in the UI
6. Allow completion of todos in the UI
7. Handle todo updates

This task order is pretty convenient, because it’s almost perfectly split into two parts: first, understanding the Cloudflare/API-level things we need to know about Workers and KV, and second, actually building up a user interface to work with the data.

Understanding Workers

In terms of implementation, a great deal of this project is centered around KV - although that may be the case, it’s useful to break Continue reading

Get ready to write — Workers KV is now in GA!

Today, we’re excited to announce Workers KV is entering general availability and is ready for production use!

What is Workers KV?

Workers KV is a highly distributed, eventually consistent, key-value store that spans Cloudflare's global edge. It allows you to store billions of key-value pairs and read them with ultra-low latency anywhere in the world. Now you can build entire applications with the performance of a CDN static cache.

Why did we build it?

Workers is a platform that lets you run JavaScript on Cloudflare's global edge of 175+ data centers. With only a few lines of code, you can route HTTP requests, modify responses, or even create new responses without an origin server.

// A Worker that handles a single redirect,
// such a humble beginning...
addEventListener("fetch", event => {
  event.respondWith(handleOneRedirect(event.request))
})

async function handleOneRedirect(request) {
  let url = new URL(request.url)
  let device = request.headers.get("CF-Device-Type")
  // If the device is mobile, add a prefix to the hostname.
  // (eg. example.com becomes mobile.example.com)
  if (device === "mobile") {
    url.hostname = "mobile." + url.hostname
    return Response.redirect(url, 302)
  }
  // Otherwise, send request to the original hostname.
  return await fetch(request)
 Continue reading

9 Things to Consider When Estimating Time

Often in my career I have to make an estimate about the so-called “level of effort” (LoE) to do a thing.

• What’s the LoE for me to do a demo for this customer?
• What’s the LoE for me to help respond to this RFP?
• What’s the LoE for me to participate in this conference?

The critical metric by which I usually have to measure the LoE is time. People, equipment, venue, materials, and location are rarely ever a limiting factor. Time is always the limiting factor because no matter the circumstance, you can’t just go and get more of it. The other factors are often elastic and can be obtained.

And oh how I suck at estimating time.

As soon as the question comes up, “What’s the LoE for…”, I immediately start to think, ok, if I am doing the work, I can do this piece and that piece, I can read up on this thing and get it done with slightly more time invested, and then yada, yada, yada… it’s done!

What I don’t account for is the human element. The unexpected. The fact that we’re all different and team members will go about their work in their Continue reading

Blogging Break

I wanted to let readers know that there will be a break in my blogging over the next few weeks. Crystal and I are celebrating our 20th wedding anniversary and have decided to take a very long trip to someplace very far away from civilization so that we can relax, unplug, and simply enjoy each other’s company.

I’ll be back in civilization on June 7, and you can expect a quick post summarizing our trip (maybe with some photos). I’ll also have some feedback on how the Peak Designs 20L photo backpack worked out for me. Until then, have a great one!

Data Deduplication in Network Automation Data Models

One of the toughest challenges in the hands-on part of Building Network Automation Solutions online course is the create a data model describing your service exercise.

Networking engineers never had to think about data models describing their networks or services, and the first attempt often results in something that looks like simplified device configuration in YAML or JSON format.

I wrote a long article describing how you can slowly redesign your box-focused data model into a network-focused one. The first parts describing the problem and initial deduplication are already online.

9 Things to Consider When Estimating Time

Often in my career I have to make an estimate about the so-called “level of effort” (LoE) to do a thing.

• What's the LoE for me to do a demo for this customer?
• What's the LoE for me to help respond to this RFP?
• What's the LoE for me to participate in this conference?

The critical metric by which I usually have to measure the LoE is time. People, equipment, venue, materials, and location are rarely ever a limiting factor. Time is always the limiting factor because no matter the circumstance, you can't just go and get more of it. The other factors are often elastic and can be obtained.

And oh how I suck at estimating time.

As soon as the question comes up, “What's the LoE for…", I immediately start to think, ok, if I am doing the work, I can do this piece and that piece, I can read up on this thing and get it done with slightly more time invested, and then yada, yada, yada… it's done!

What I don't account for is the human element. The unexpected. The fact that we're all different and team members will go about their work in their Continue reading

One night in Beijing

As the old saying goes, good things come in pairs, 好事成双！ The month of May marks a double celebration in China for our customers, partners and Cloudflare.

First and Foremost

A Beijing Customer Appreciation Cocktail was held in the heart of Beijing at Yintai Centre Xiu Rooftop Garden Bar on the 10 May 2019, an RSVP event graced by our supportive group of partners and customers.

We have been blessed with almost 10 years of strong growth at Cloudflare - sharing our belief in providing access to internet security and performance to customers of all sizes and industries. This success has been the result of collaboration between our developers, our product team as represented today by our special guest, Jen Taylor, our Global Head of Product, Business Leaders Xavier Cai, Head of China business, and Aliza Knox Head of our APAC Business, James Ball our Head of Solutions Engineers for APAC, most importantly, by the trust and faith that our partners, such as Baidu, and customers have placed in us.

Double Happiness, 双喜

On the same week, we embarked on another exciting journey in China with our grand office opening at WeWork. Beijing team consists of functions from Customer Development Continue reading

Network Break 235: Microsoft Issues Patch For Wormable Vulnerability; Intel Pursued By ZombieLoad

Today's Network Break tackles a string of vulnerabilities from Microsoft, Cisco, and Intel. We also look at a new 400G switch from Arista, an IoT security announcement from Extreme, Cisco financial results, and more tech news.

The post Network Break 235: Microsoft Issues Patch For Wormable Vulnerability; Intel Pursued By ZombieLoad appeared first on Packet Pushers.

Transparency Drives SDxCentral to Discontinue Publishing Analyst Columns and Contributor Content

When IoT systems fail: The risk of having bad IoT data

No matter what numbers you look at, it’s clear that the internet of things (IoT) continues to worm its way into more and more areas of personal and private life. That growth brings many benefits, but it also poses new risks. A big question is who takes responsibility when things go wrong.Perhaps the biggest issue surrounds the use of IoT-generated data to personalize the offering and pricing of various products and services. Insurance companies have long struggled with how best to use IoT data, but last year I wrote about how IoT sensors are beginning to be used to help home insurers reduce water damage losses. And some companies are looking into the potential for insurers to bid for consumers: business based on the risks (or lack thereof) revealed by their smart-home data.To read this article in full, please click here

FCC Chief Backs T-Mobile-Sprint Merger With Concessions

Oracle Taps Kubernetes, Service Broker API to Automate Cloud Services

Intel, Google, Other US Tech Companies Ban Huawei Following Trump Blacklist

Out and about this week

A reminder to my readers that I will be speaking at Interop19 this week in Las Vegas on Wednesday. Denise Donohue and I are speaking about finding smart people:

Every hiring manager wants someone who will “hit the ground running.” But there are many ways to achieve that result. In this session, you’ll learn the most effective ways to find and grow talent for your organization. We’ll address key decision points around talent acquisition…

I will also be speaking at CHINOG Chicago Illinois on Thursday:

Disaggregation began with the hyperscalers, and is quickly moving through the rest of the network engineering world. What is disaggregation, really? Does it always mean open source and white boxes, or is there some broader meaning that can be applied across many different products to build and add value to many different kinds of networks?

And interacting with some other folks on a panel about getting started in the IETF.

Mellanox Launches Ethernet Cloud Fabric Based on 400G Switches

Those Without Persistent Memory Are Fated To Repeat It

We have published a number of stories lately that talk about the innovative uses of Intel’s 3D XPoint Optane persistent memory modules, which are a key component of the company’s “Cascade Lake” Xeon SP systems and which are also becoming a foundational technology in clustered storage based on NVM-Express over Fabrics interconnects from a number of storage upstarts. …

Those Without Persistent Memory Are Fated To Repeat It was written by Timothy Prickett Morgan at .

Introducing Docker Kubernetes Service

Kubernetes is a powerful orchestration technology for deploying, scaling and managing distributed applications and it has taken the industry by storm over the past few years. However, due to its inherent complexity, relatively few enterprises have been able to realize the full value of Kubernetes; with 96% of enterprise IT organizations unable to manage Kubernetes on their own. At Docker, we recognize that much of Kubernetes’ perceived complexity stems from a lack of intuitive security and manageability configurations that most enterprises expect and require for production-grade software.

Docker Kubernetes Service (DKS) is a Certified Kubernetes distribution that is included with Docker Enterprise 3.0 and is designed to solve this fundamental challenge. It’s the only offering that integrates Kubernetes from the developer desktop to production servers, with ‘sensible secure defaults’ out-of-the-box. Simply put, DKS makes Kubernetes easy to use and more secure for the entire organization. Here are three things that DKS does to simplify (and accelerate) Kubernetes adoption for the enterprise:

Consistent, seamless Kubernetes experience for developers and operators

DKS is the only Kubernetes offering that provides consistency across the full development lifecycle from local desktops to servers. Through the use of Version Packs, developers’ Kubernetes environments running Continue reading

The Week in Internet News: San Francisco Bans Use of Facial Recognition by Police

No cameras, please: The San Francisco Board of Supervisors has voted to ban the use of facial recognition technologies by the policy and other agencies over privacy and civil liberties concerns, the New York Times reports. Even though police across the country have used the technology to identify criminals, facial recognition has raised fears of abuse and of turning the country into a police state.

Broadband in space: SpaceX had planned to launch a rocket containing 60 satellites designed to deliver broadband service, but the company delayed the launch a couple of times, first because of wind and then because the satellites need a software update, ExtremeTech reports. The launch was supposed to be a first step toward Elon Musk’s plan to create a space-based broadband network.

Broadband in drones: As an alternative to satellite broadband and other efforts, SoftBank is looking at ways to provide Internet service by drone, the L.A. Times says. The Japanese telecom carrier recently announced it is working with drone maker AeroVironment to build a drone capable of “flying to the stratosphere, hovering around an area for months and serving as a floating cell tower to beam internet to users on Earth.”

Just Continue reading

VMware to Showcase NSX Service Mesh with Enterprise PKS at KubeCon EMEA

Go Beyond Microservices with NSX Service Mesh

Based on Istio and Envoy, VMware NSX Service Mesh provides discovery, visibility, control, and security of end-to-end transactions for cloud native applications. Announced at KubeCon NA 2018, NSX Service Mesh is currently in private Beta and interested users may sign up here.

The design for NSX Service Mesh extends beyond microservices to include end-users accessing applications, data stores, and sensitive data elements. NSX Service Mesh also introduces federation for containerized applications running on multiple VMware Kubernetes environments, across on-premises and public clouds. This enables improved operations, security, and visibility for containerized applications running on clusters across multiple on-premises and public clouds – with centrally defined and managed configuration, visuals, and policies.

Enterprises can leverage a number of different capabilities including:

• Traffic management
• mTLS encryption
• Application SLO policies and resiliency controls
• Progressive roll outs
• Automated remediation workflows

Achieve Operational Consistency with Federated Service Mesh

At Google Cloud Next, VMware and Google demonstrated how a hybrid cloud solution can use a federated service mesh across Kubernetes clusters on VMware Enterprise PKS and GKE. This highlighted one example deployment for how enterprise teams can achieve consistent operations and security for cloud native applications and data.

To learn Continue reading

One more thing… new Speed Page

Congratulations on making it through Speed Week. In the last week, Cloudflare has: described how our global network speeds up the Internet, launched a HTTP/2 prioritisation model that will improve web experiences on all browsers, launched an image resizing service which will deliver the optimal image to every device, optimized live video delivery, detailed how to stream progressive images so that they render twice as fast - using the flexibility of our new HTTP/2 prioritisation model and finally, prototyped a new over-the-wire format for JavaScript that could improve application start-up performance especially on mobile devices. As a bonus, we’re also rolling out one more new feature: “TCP Turbo” automatically chooses the TCP settings to further accelerate your website.

As a company, we want to help every one of our customers improve web experiences. The growth of Cloudflare, along with the increase in features, has often made simple questions difficult to answer:

• How fast is my website?
• How should I be thinking about performance features?
• How much faster would the site be if I were to enable a particular feature?

This post will describe the exciting changes we have made to the Speed Page on the Cloudflare dashboard to give Continue reading