The Netflix TechBlog

SEPTEMBER 8, 2020

Functional Testing Functional testing was the most straightforward of them all: a set of tests alongside each path exercised it against the old and new endpoints. However, with the new microservice, even fetching this cached data needed to incur a network round trip, which added some latency. This meant that data that was static (e.g.

Latency 233

Latency Cache Java Traffic 233

Dynatrace

JUNE 27, 2022

Synthetic monitoring is well suited for catching regressions during development lifecycles, especially with network throttling. Performance testing based on variable metrics (i.e., connectivity, access, user count, latency) of geographic regions. Synthetic monitoring drawbacks. Much like RUM, synthetic monitoring has its limitations.

Best Practices 177

Best Practices Monitoring Wireless Traffic 177

Scalegrid

APRIL 16, 2020

A vast majority of the features are the same, outside of these advanced features available through the BYOC model: Virtual Private Clouds / Virtual Networks. Amazon Virtual Private Clouds (VPC) and Azure Virtual Networks (VNET) are private, isolated sections of the cloud infrastructure where you can launch resources. Security Groups.

Cloud 242

Cloud Azure AWS Database 242

Dynatrace

SEPTEMBER 30, 2021

Hosted and moderated by Amazon, AWS GameDay is a hands-on, collaborative, gamified learning exercise for applying AWS services and cloud skills to real-world scenarios. AWS Certified Advanced Networking – Specialty: Very experienced networking professionals who are also proficient in AWS can benefit from getting this certification.

AWS 212

AWS Best Practices Analytics Cloud 212

Dynatrace

MAY 6, 2019

The Juniper plugin is an ActiveGate Plugin written in Python, it consists of a script that connects to a Juniper Networks device and collects some facts and metrics about it. The Juniper Networks plugin lets you monitor your Juniper Networks Devices from Dynatrace. Part 1 – The code as it stood.

Code 116

Code Development Metrics Network 116

Tech News Gather

JUNE 15, 2023

In addition, it can also inculcate resources such as articles, podcasts, and breathing exercises to help users develop coping strategies and resilience. Users can embark on a musical journey with interactive tutorials, practice exercises, and gamified learning experiences tailored to different skill levels.

Education 52

Education Virtualization Innovation Transportation 52

Dynatrace

APRIL 21, 2022

Using a data-driven approach to size Azure resources, Dynatrace OneAgent captures host metrics out-of-the-box to assess CPU, memory, and network utilization on a VM host. Once you have and understand this data, you can identify issues, find opportunities for improvement, and eliminate risks before you go through a costly migration exercise.

Azure 190

Azure Monitoring Virtualization Metrics 190

The Morning Paper

OCTOBER 8, 2019

Ours is a story of the elements we found useful in applying neural networks to a real life product. From this foundation, they took their first steps towards neural networks. Airbnb moved from their starting point with a Gradient Boosted Decision Tree (GBDT) model towards deep neural networks in stages. Is it worth it?

Network 82

Network Architecture Tuning Traffic 82

HammerDB

APRIL 19, 2023

Instead, focus on understanding what the workloads exercise to help us determine how to best use them to aid our performance assessment. As database performance is heavily influenced by the performance of storage, network, memory, and processors, we must understand the upper limit of these key components. 4.22 %usr 38.40 0.42 %sys 9.52

Performance 54

Performance Benchmarking Cache Storage 54

Testsigma

JANUARY 6, 2022

Today, when people are working from home, they are using personal or company-provided laptops to connect to the office network. Mostly we are using a virtual desktop to stay connected to the organization’s network. Any technical glitch such as a network bandwidth issue can impact the output of the whole organization.

Testing 52

Testing Internet Internet Testing Tools 52

Dynatrace

JUNE 1, 2021

However, with today’s highly connected digital world, monitoring use cases expand to the services, processes, hosts, logs, networks, and of course, end-users that access these applications — including a company’s customers and employees. Mobile apps, websites, and business applications are typical use cases for monitoring.

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

Speed Curve

DECEMBER 13, 2023

A couple of things worth noting: All of the sites in the leaderboard sites are pretty speedy, so this is NOT a name-and-shame exercise. Are you using a content delivery network (CDN) to bring elements like images closer to your users, so that delivery times are faster? Are non-essential or lesser resources deferred?

Performance 67

Performance Retail Benchmarking Ecommerce 67

Percona

DECEMBER 5, 2023

Certainly, you can take advantage of this when you work with a large data set, and the initial copy could lead to long timeframes or network saturation. The scenario Service considerations In this exercise, we wanted to perform a major version upgrade from PostgreSQL v12.16 to PostgreSQL v15.4.

Database 80

Database Traffic C++ Servers 80

The Morning Paper

SEPTEMBER 24, 2019

Each app was then executed on a physical mobile phone equipped with a custom OS and network monitor. The apps are driven using Android’s Application Exerciser Monkey which injects a pseudo-random stream of simulated user input events into the app (a UI fuzzer). most apps). most apps). Finding out how those apps leak data.

Systems 74

Systems Traffic Network Google 74

All Things Distributed

MAY 27, 2015

The goal of opening the loft was to give developers an opportunity to get in-person support and education on AWS, to network, get some work done, or just hang out with peers. Following the talk, we’ll kick off a unique networking social including specialty cocktails, beer, wine, food, and party swag!

AWS 95

AWS Education Big Data Games 95

Tasktop

OCTOBER 8, 2020

Connecting with other women in the networking chat rooms was amazing, as well as internally at Tasktop! Tina Dankwart, Value Stream Architect : Elizabeth Acevedo made me realize that I need more poetry in my life, and combined with Reshma Saujani’s talk — I have put on my ‘list’ to actually WRITE some poetry and do something ‘artsy’ (yikes!)

Software Engineering 59

Software Engineering Virtualization Network Software 59

Tim Kadlec

FEBRUARY 21, 2018

For example, I have a folder full of 1-2 hour sections on various performance topics—the network, how the browser works, fonts, images, service-workers, etc. Exercises are critical. Some people may opt to sit out an exercise or two. The modules are rarely the same from different workshop to workshop.

Network 53

Network Code Performance 53

Brendan Gregg

JUNE 30, 2018

sounds like a homework exercise of purely academic value. I've refuted many benchmarks by showing that they would require a network throughput that would far exceed the maximum network bandwidth (off by, for example, as much as 10x!). Networking is the easiest to check. This is really asking "what's the limiter?"

Benchmarking 54

Benchmarking Latency Cache Network 54

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. For example, the network port at which PostgreSQL listens cannot be changed at the individual database level. This is the level at which decisions on whether to use data_checksums need to be taken.

Database 105

Database Servers Open Source Tuning 105

CSS - Tricks

APRIL 1, 2021

With all of this in mind, I thought improving the speed of my own version of a slow site would be a fun exercise. Using a network request inspector, I’m going to see if there’s anything we can remove via the Network panel in DevTools. In DevTools, the Network inspector helps us see what the first webpage is doing too.

Cache 92

Cache Social Media Media Website 92

Particular Software

DECEMBER 9, 2019

Decommissioning Public102 was an exercise in the mundane, gradually transitioning tiny service after tiny service to new homes over the course of weeks, as the development schedule allowed. Unfortunately, the network operations had a cruel surprise for us. You create a new server with the same software and add it to the load balancer.

Wireless 52

Wireless DevOps Infrastructure Network 52

Brendan Gregg

DECEMBER 21, 2019

You can.but if you're looking for an educational exercise, I'd recommend using BPF tools to find performance wins. Miller (networking maintainer) recently asked if I still used my "noisy typewriter," which I had turned on a little too loud during a [LISA 2016] demo. bpftrace became even more powerful on Linux 5.3,

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

You can.but if you're looking for an educational exercise, I'd recommend using BPF tools to find performance wins. Miller (networking maintainer) recently asked if I still used my "noisy typewriter," which I had turned on a little too loud during a [LISA 2016] demo. bpftrace became even more powerful on Linux 5.3,

C++ 52

C++ Education Java AWS 52

The Morning Paper

MARCH 15, 2020

This approach is limited by what requestors can observe externally… To expose partial failures, a detector needs to exercise specific code regions with carefully-chosen payloads. Heartbeat and HTTP-based tests are too generic and too divorced from the monitored process’ state.

Systems 98

Systems Software Software Programming 98

Brendan Gregg

JUNE 29, 2018

sounds like a homework exercise of purely academic value. I've refuted many benchmarks by showing that they would require a network throughput that would far exceed the maximum network bandwidth (off by, for example, as much as 10x!). Networking is the easiest to check. This is really asking "what's the limiter?"

Benchmarking 40

Benchmarking Latency Cache Network 40

All Things Distributed

SEPTEMBER 26, 2014

Topics include Introduction to AWS, Big Data, Compute & Networking, Architecture, Mobile & Gaming, Databases, Operations, Security, and more. Limited to twenty participants, these full-day bootcamps include hands-on lab exercises using a live environment with the AWS console. AWS Technical Bootcamps.

AWS 111

AWS Games Education Innovation 111

MachMetrics

DECEMBER 12, 2019

The idea behind these UI decisions is that a badge would let a user know quickly if a site is loading slowly due to a problem on their end (network issue, internet is down, etc) or if the website is known to be built in a way that loads slowly. Most stemmed from Google exercising too much power with this move.

Google 86

Google Website Best Practices Internet 86

The Morning Paper

NOVEMBER 14, 2019

It’s another networking paper to close out the week (and our coverage of SOSP’19), but whereas Snap looked at traffic routing within the datacenter, Taiji is concerned with routing traffic from the edge to a datacenter. For example, balance utilisation across all data centers, or optimise for network latency. SOSP’19.

Traffic 42

Traffic Internet Internet Latency 42

Tasktop

OCTOBER 29, 2020

It’s the gym membership that forces you to exercise. Now, if your house is a mess, a complex web of dependencies; hundreds or thousands of applications, services and platforms; a collaboration network that spans dozens of suppliers; knowledge work that traverses tens of tools… Well, first, welcome to the Global 5000.

Storage 52

Storage Speed C++ DevOps 52

Smashing Magazine

JULY 22, 2021

Exercise/outdoors. Networking. Let’s now take a look at a breakdown on how our day is being spent at work: Category. Completing actual work. Creating presentations. Cooking/Eating. Games/Leisure. I think it’s safe to say we all despise meetings, yet they seem neverending. For my work goals, I have the following objectives: Outreach.

Games 126

Games Availability Software Software 126

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. They are concerned with physical locations and cloud regions, networking failures, problems with infrastructure hardware, and failures of the control planes used to provision and manage infrastructure.

Latency 52

Latency Engineering Systems Hardware 52

John McCalpin

AUGUST 1, 2018

This is an intellectually challenging and labor-intensive exercise, requiring detailed review of the published details of each of the components of the system, and usually requiring significant “detective work” (using customized microbenchmarks, hardware performance counter analysis, and creative thinking) to fill in the gaps.

Hardware 40

Hardware Transportation Performance Latency 40

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. They are concerned with physical locations and cloud regions, networking failures, problems with infrastructure hardware, and failures of the control planes used to provision and manage infrastructure.

Latency 53

Latency Engineering Systems Hardware 53

Smashing Magazine

DECEMBER 2, 2021

With Advent of Cyber , you can get started with Cyber Security by learning the basics and completing a new, beginner friendly security exercise every day. Counting down to Christmas, this calendar is dedicated to sharing a new tip for protecting your devices, networks, and data each day. Advent of Cyber. Infowebica on Twitter.

Design 107

Design Development Programming Website 107

SQL Server According to Bob

FEBRUARY 10, 2019

Network Trace. Looking at network traces helps build our understanding of the problem. Network Layer Overloaded. In contrast to the failing SQL Server login, this is what a network trace looks like when the network layer becomes overloaded and is not completing requests to the SQL Server.

Servers 40

Servers Network Database Systems 40

The Morning Paper

DECEMBER 8, 2019

Traditionally one of the major costs when moving data in and out of memory (be it to persistent media or over the network) is serialisation. This is left as an exercise for the application developer at present. in front of that memory , as we saw last week). What about security?

Hardware 56

Hardware Programming Media Storage 56

The Morning Paper

JULY 4, 2019

degraded hardware, transient networking problem) or, more often, because of some change deployed by Netflix engineers that did not have the intended effect. In this type of environment, there are many potential sources of failure, stemming from the infrastructure itself (e.g.

Latency 77

Latency Engineering Metrics Traffic 77