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Building scheduling system with Workers and Durable Objects

We rely on technology to help us on a daily basis – if you are not good at keeping track of time, your calendar can remind you when it's time to prepare for your next meeting. If you made a reservation at a really nice restaurant, you don't want to miss it! You appreciate the app to remind you a day before your plans the next evening.

However, who tells the application when it's the right time to send you a notification? For this, we generally rely on scheduled events. And when you are relying on them, you really want to make sure that they occur. Turns out, this can get difficult. The scheduler and storage backend need to be designed with scale in mind - otherwise you may hit limitations quickly.

Workers, Durable Objects, and Alarms are actually a perfect match for this type of workload. Thanks to the distributed architecture of Durable Objects and their storage, they are a reliable and scalable option. Each Durable Object has access to its own isolated storage and alarm scheduler, both being automatically replicated and failover in case of failures.

There are many use cases where having a reliable scheduler can come Continue reading

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Notes from IETF114

IETF114 was held in the last week of July 2022 as a hybrid meeting, with the physical meeting being held in Philadelphia. Here’s my notes on topics that attracted my interest from the week.

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Weekend Reads 080422

Hackers are now ​​moving faster than ever when it comes to scanning vulnerability announcements from software vendors.

However, open source has an urgent security problem. Open source is more ubiquitous and susceptible to persistent threats than ever before.

You’ve done everything to secure your network, and you still face threats. That’s what most enterprises say about their network security, and they’re half right.

The largest datacenter market in the US is running into trouble: There isn’t enough power transmission capacity in the region to handle all the bit barn projects.

While Prometheus has been the current standard for monitoring your systems, OpenTelemetry is quickly gaining ground, especially in the cloud-native landscape, which was traditionally Prometheus’ stronghold.

A phishing campaign is underway that uses mirror images of target organizations’ landing pages to trick victims into entering login credentials.

It’s been about a decade since the hype for bug-bounty programs first started going supernova, but the jury is still out on the effectiveness of them.

There is an interesting new trend in fiber construction. Some relatively large cities are getting fiber networks using microtrenching.

Despite the area, cost, and power challenges designers face when integrating FPGAs into devices, they provide significant security Continue reading

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Ansible For Network Automation Lesson 11: Ansible For Meraki – Video

In this final episode of the Ansible For Network Automation course, Josh VanDeraa explores how to gather network information, setting up Meraki VLANs with Ansible, and creating and deleting Meraki SSIDs. You can find the full playlist with all the videos in the course on the Packet Pushers’ YouTube channel. You can subscribe to the […]

The post Ansible For Network Automation Lesson 11: Ansible For Meraki – Video appeared first on Packet Pushers.

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Ansible For Network Automation Lesson 10: Ansible Configuration And Verification – Video

Course instructor Josh VanDeraa provides more detail on roles in Ansible, and then shows a practical example by configuring and verifying QoS settings on network devices by taking advantage of roles. You can find the full playlist with all the videos in the course on the Packet Pushers’ YouTube channel. You can subscribe to the […]

The post Ansible For Network Automation Lesson 10: Ansible Configuration And Verification – Video appeared first on Packet Pushers.

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802.11x: Wi-Fi standards and speeds explained

The term Wi-Fi is synonymous with wireless LANs, despite the fact it’s a specific trademark owned by the Wi-Fi Alliance, a group dedicated to certifying that products meet the IEEE’s wireless standards.In the IEEE’s naming convention, all standards that specify protocols for implementing wireless LANs fall under the 802.11umbrella. Individual standards are assigned alphabetically, 802.11a, 802.11b, etc. Thanks to the widespread acceptance of wireless LANs, new standards continue to be developed at a rapid pace, creating a confusing alphabet soup.To read this article in full, please click here

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HPE to ship a dedicated inference server for the edge

Later this month, HP Enterprise will ship what looks to be the first server aimed specifically at AI inferencing for machine learning.Machine learning is a two-part process, training and inferencing. Training is usign powerful GPUs from Nvidia and AMD or other high-performance chips to “teach” the AI system what to look for, such as image recognition. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Inference answers if the subject is a match for trained models. A GPU is overkill for that task, and a much lower power processor can be used.To read this article in full, please click here

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HPE to ship a dedicated inference server for the edge

Later this month, HP Enterprise will ship what looks to be the first server aimed specifically at AI inferencing for machine learning.Machine learning is a two-part process, training and inferencing. Training is usign powerful GPUs from Nvidia and AMD or other high-performance chips to “teach” the AI system what to look for, such as image recognition. [ Get regularly scheduled insights by signing up for Network World newsletters. ] Inference answers if the subject is a match for trained models. A GPU is overkill for that task, and a much lower power processor can be used.To read this article in full, please click here

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Why SASE Requires A New Way Of Thinking

The following post is sponsored by Palo Alto Networks. SASE, or Secure Access Service Edge, doesn’t require new skills for network engineers so much as a new mindset. You don’t learn a new routing protocol or encryption tunnel. You do need to embrace diverse connectivity options, hybrid work, and supporting applications that are on premises […]

The post Why SASE Requires A New Way Of Thinking appeared first on Packet Pushers.

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Kubernetes Unpacked 006: The Impact Of Kubernetes On DevOps Teams

Kubernetes is hard. Regardless of what tech marketing says, DevOps teams are still trying to implement and figure out this whole Kubernetes thing. With multi-cloud, hybrid cloud, and on-prem Kubernetes implementations, how can teams start their journey and have an impact? Michael Levan catches up with Jeff Smith, Ops Director and author, to talk about his journey into Kubernetes for his team and what other teams should think about when implementing Kubernetes.

The post Kubernetes Unpacked 006: The Impact Of Kubernetes On DevOps Teams appeared first on Packet Pushers.

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Kubernetes Unpacked 006: The Impact Of Kubernetes On DevOps Teams

Kubernetes is hard. Regardless of what tech marketing says, DevOps teams are still trying to implement and figure out this whole Kubernetes thing. With multi-cloud, hybrid cloud, and on-prem Kubernetes implementations, how can teams start their journey and have an impact? Michael Levan catches up with Jeff Smith, Ops Director and author, to talk about his journey into Kubernetes for his team and what other teams should think about when implementing Kubernetes.

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Cisco shakeup: Networking chief Todd Nightingale to helm Fastly

Cisco’s networking organization is getting a shake-up as its Enterprise Networking and Cloud business chief Todd Nightingale is leaving to become CEO of cloud content-delivery company Fastly.Nightingale has been with Cisco since 2012, coming over in the company’s acquisition of Meraki and has been a key driver to “Merakify” Cisco’s multi-billion dollar enterprise portfolios. That is to say Meraki’s technology has a reputation for being easy to use and manage and Cisco is now moving toward making that strategy a core part of its high-end enterprise hardware and software strategy. [ Get regularly scheduled insights by signing up for Network World newsletters. ]To read this article in full, please click here

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Experiment with post-quantum cryptography today

Practically all data sent over the Internet today is at risk in the future if a sufficiently large and stable quantum computer is created. Anyone who captures data now could decrypt it.

Luckily, there is a solution: we can switch to so-called post-quantum (PQ) cryptography, which is designed to be secure against attacks of quantum computers. After a six-year worldwide selection process, in July 2022, NIST announced they will standardize Kyber, a post-quantum key agreement scheme. The standard will be ready in 2024, but we want to help drive the adoption of post-quantum cryptography.

Today we have added support for the X25519Kyber512Draft00 and X25519Kyber768Draft00 hybrid post-quantum key agreements to a number of test domains, including pq.cloudflareresearch.com.

Do you want to experiment with post-quantum on your test website for free? Mail [email protected] to enroll your test website, but read the fine-print below.

What does it mean to enable post-quantum on your website?

If you enroll your website to the post-quantum beta, we will add support for these two extra key agreements alongside the existing classical encryption schemes such as X25519. If your browser doesn’t support these post-quantum key agreements (and none at the time Continue reading

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HS029 Do You Want A Strategic Vendor ?

The pro and con's of having preferred supplier for IT technology ? You can save time and effort, simplify purchasing and move quicker but are you getting the best solution and support. We discuss different perspectives on going down the path and point out the subscription pricing moves towards vendor lockin.

The post HS029 Do You Want A Strategic Vendor ? appeared first on Packet Pushers.

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HS029 Do You Want A Strategic Vendor ?

The pro and con's of having preferred supplier for IT technology ? You can save time and effort, simplify purchasing and move quicker but are you getting the best solution and support. We discuss different perspectives on going down the path and point out the subscription pricing moves towards vendor lockin.

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Are Cloud Outages the Result of Choosing Price Over Reliability?

Market pressures and risk tradeoffs made by cloud providers might be the key to understanding why outages happen and what lies ahead for resolving cloud outages that can bring down regional, if not national commerce.

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Government-imposed internet shutdowns impacted 1.9 billion people in first half of 2022

Internet shutdowns by governments across the world impacted 1.89 billion citizens globally in the first half of 2022, a 22% increase when compared with the second half of 2021.A recent report compiled by VPN service provider Surfshark found there were 66 state-mandated internet blackouts imposed across six countries and territories during the period: Burkina Faso, India, Jammu and Kashmir, Kazakhstan, Pakistan, and Sudan. Local shutdowns were observed in India, Jammu and Kashmir region, and Pakistan, while Burkina Faso, Kazakhstan, and Sudan chose to cut down internet connections nationwide.While there was an overall decrease in the number of internet shutdowns during the period—72 cases in the first half of 2022 compared with 84 reported in the second half of 2021—the number of people impacted was much higher, as reliance on the internet has increased globally.To read this article in full, please click here

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Government-imposed internet shutdowns impacted 1.9 billion people in first half of 2022

Internet shutdowns by governments across the world impacted 1.89 billion citizens globally in the first half of 2022, a 22% increase when compared with the second half of 2021.A recent report compiled by VPN service provider Surfshark found there were 66 state-mandated internet blackouts imposed across six countries and territories during the period: Burkina Faso, India, Jammu and Kashmir, Kazakhstan, Pakistan, and Sudan. Local shutdowns were observed in India, Jammu and Kashmir region, and Pakistan, while Burkina Faso, Kazakhstan, and Sudan chose to cut down internet connections nationwide.While there was an overall decrease in the number of internet shutdowns during the period—72 cases in the first half of 2022 compared with 84 reported in the second half of 2021—the number of people impacted was much higher, as reliance on the internet has increased globally.To read this article in full, please click here

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Government-imposed internet shutdowns impacted 1.9 billion people in first half of 2022

Internet shutdowns by governments across the world impacted 1.89 billion citizens globally in the first half of 2022, a 22% increase when compared with the second half of 2021.A recent report compiled by VPN service provider Surfshark found there were 66 state-mandated internet blackouts imposed across six countries and territories during the period: Burkina Faso, India, Jammu and Kashmir, Kazakhstan, Pakistan, and Sudan. Local shutdowns were observed in India, Jammu and Kashmir region, and Pakistan, while Burkina Faso, Kazakhstan, and Sudan chose to cut down internet connections nationwide.While there was an overall decrease in the number of internet shutdowns during the period—72 cases in the first half of 2022 compared with 84 reported in the second half of 2021—the number of people impacted was much higher, as reliance on the internet has increased globally.To read this article in full, please click here

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Using the yes command to automate responses

One of the more unusual Linux commands is named “yes”. It’s a very simple tool intended to help you avoid having to answer a lot of questions that might be asked when you run a script or a program that needs a series of responses to do its work.If you type “yes” by itself at the command prompt, your screen is going to start filling up with the just the letter “y” (one per line) until you hit control-C to stop it. It’s also incredibly fast. Unlike what you see displayed below, yes will likely spit out more than a million y’s in the time it likely takes you to reach down and press control-C. Fortunately, that’s not all that this command can do.To read this article in full, please click here