Dynatrace

JUNE 1, 2023

More than half of CIOs confirmed that they often make tradeoffs among code quality, security, and reliability to meet the need for rapid software delivery. Fitness app : The fitness app should offer a response time of less than 500 milliseconds for exercise tracking and data recording.

Traffic 173

Traffic Website Latency Virtualization 173

The Netflix TechBlog

SEPTEMBER 10, 2024

Where aws ends and the internet begins is an exercise left to the reader. As the scale of the messages being processed increased and we were making more code changes in the message processor, we found ourselves looking for something more flexible. This initial functionality was built out for FireTVs and was expanded from there.

Latency 233

Latency Cache Tuning Efficiency 233

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 Infrastructure 148

O'Reilly

JANUARY 17, 2023

Figuring out what kinds of problems are amenable to automation through code. So it behooves a software developer to spot what portions of human activity can be properly automated away through code, and then build that. Because if companies use code to automate business rules, they use ML/AI to automate decisions.

Tuning 132

Tuning Open Source Software Software 132

Smashing Magazine

AUGUST 19, 2021

It all starts with a Code of Ethics. “I Outcomes of a code of ethics affect almost every aspect of your user research practice, from processes to templates and team environment. Outcomes of a code of ethics affect almost every aspect of your user research practice, from processes to templates and team environment.

Code 139

Code Design Education Government 139

All Things Distributed

SEPTEMBER 26, 2014

In October there will be an abundance of sessions, events, and coding activities focused on game and mobile app development. Topics include Introduction to AWS, Big Data, Compute & Networking, Architecture, Mobile & Gaming, Databases, Operations, Security, and more. What’s Happening at the AWS Loft. AWS Technical Bootcamps.

AWS 93

AWS Games Education Innovation 93

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. All in, OmegaGen is about 8Kloc of Java code, making use of the Soot analysis framework. OmegaGen in action.

Systems 98

Systems Software Software Programming 98

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

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. The code for the site is available on GitHub for reference. Using a network request inspector, I’m going to see if there’s anything we can remove via the Network panel in DevTools.

Cache 92

Cache Social Media Media Network 92

Smashing Magazine

JULY 22, 2021

In my records for the entire day, I put one color code for my work hours and will have a separate diagram specifically to break up my work hours. Exercise/outdoors. Networking. In the image above, I have outlined three sample days which may or may not be from my own days. Large preview ). Completing actual work. Cooking/Eating.

Games 129

Games Availability Software Software 129

Smashing Magazine

DECEMBER 2, 2021

Advent of Code. If you prefer a puzzle over an article, take a look at Advent of Code. Code Security Advent Calendar. If you’re up for a challenge that involves spotting security vulnerabilities, then the Code Security Advent Calendar is just the right one for you. JavaAdvent on Twitter. LeanUXmas on Twitter.

Design 110

Design Development Programming Website 110

Percona

AUGUST 30, 2023

If a PostgreSQL user wants to change these values, they need to recompile the PostgreSQL from the source code. 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.

Database 109

Database Servers Open Source Tuning 109

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

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

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. Signup now.

Testing 52

Testing Internet Internet Testing Tools 52

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? Use code splitting judiciously. Are images optimized?

Performance 72

Performance Retail Benchmarking Ecommerce 72

Tasktop

OCTOBER 8, 2020

Reshma Saujani, founder of Girls Who Code , spoke about choosing bravery over perfectionism. Connecting with other women in the networking chat rooms was amazing, as well as internally at Tasktop! The statement ‘Every action you take is a vote for the type of person you want to become’ really hit home for me and really inspired me!

Software Engineering 59

Software Engineering Virtualization Network Software 59

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

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python usr/bin/python # # iwlstrength.py iwl wifi stregth as audio # For Linux, uses BCC, eBPF.

C++ 52

C++ Education Java AWS 52

Brendan Gregg

DECEMBER 21, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python usr/bin/python # # iwlstrength.py iwl wifi stregth as audio # For Linux, uses BCC, eBPF.

C++ 52

C++ Education Java AWS 52

SQL Performance

JUNE 10, 2020

That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? The answer is simple, to shorten the code by having the inner query use the infamous SELECT *. And if so, is there a way to instruct SQL Server to avoid this unnesting process?

C++ 109

C++ Database Servers Code 109

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 55

Performance Benchmarking Cache Storage 55

Alex Russell

AUGUST 30, 2021

Anyone who cares to download and fork the code can do so. " The eventual Blink fork was precipitated by an insurmountable difficulty in doing precisely what Apple suggested to Congress: contributing code upstream to WebKit to enable new features. It's worth assessing these claims from most easily falsified to most contested.

Engineering 112

Engineering Open Source Website Operating System 112

Speed Curve

DECEMBER 10, 2017

Network metrics have been around for decades, but rendering metrics are newer. The gating factor in web performance ten years ago was network. Hopefully you went through the exercise of picking which rendering metric best corresponds to what you feel is a "good UX". Speed Index. Start Render. Time to First Interactive.

Metrics 70

Metrics Website Speed Monitoring 70

John McCalpin

AUGUST 1, 2018

Bandwidth, performance analysis has two recurring themes: How fast should this code (or “simple” variations on this code) run on this hardware? Interacting components in the execution of an MPI job — a brief outline (from memory): The user source code, which contains an ordered set of calls to MPI routines.

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. Following the value chain from the business perspective, the first team is the product managers and developers who specify and build the unique code that makes up the business logic of the system.

Latency 53

Latency Systems Engineering Hardware 53

SQL Performance

JUNE 10, 2020

That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? The answer is simple, to shorten the code by having the inner query use the infamous SELECT *. And if so, is there a way to instruct SQL Server to avoid this unnesting process?

C++ 93

C++ Database Servers Code 93

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Following the value chain from the business perspective, the first team is the product managers and developers who specify and build the unique code that makes up the business logic of the system.

Latency 52

Latency Systems Engineering Hardware 52

Alex Russell

SEPTEMBER 20, 2020

Circa '07, those web apps were notably slower than native code could be. Sandboxing is now universal (tho quality may differ) and we collectively got savvy about running code quickly while retaining memory safety. Browsers are wildly unsafe because they load untrusted code and, therefore, they must use only Apple's ( safe?

Hardware 71

Hardware Mobile Programming Java 71

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. The Twizzler KVS (key-value store) is just 250 lines of C code, and uses one persistent object for the index structure, and a second one for the data. The FOT structure has some pros and cons. .

Hardware 56

Hardware Programming Media Storage 56

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. Other Schedulers Impacted.

Servers 40

Servers Network Database Systems 40

The Morning Paper

APRIL 16, 2019

The networking model is asynchronous (allowing out of order, dropped, delayed, and duplicated messages), the failure model is crash-stop. Consider the lab exercise to implement Paxos. The hardest part of the class for many students is learning to think about their code as inherently distributed. Testing and model checking.

Systems 43

Systems Efficiency Testing Design 43

Rigor

NOVEMBER 22, 2019

Check out our example exercise that follows his methodology using the free tool WebPageTest. (Of Using your website’s web analytics software, you can view the various network connections and identify the slowest popular networks for your audience. Step-by-Step Creation of a Performance Budget. REQUEST A FREE TRIAL.

Performance 45

Performance Metrics Website Speed 45

Tim Kadlec

JANUARY 4, 2018

His point, very Neil Postman-esque, is particularly true in today’s world of entertainment-driven news and fast-moving social networks that I’m increasingly convinced that, by default, only amplify existing biases. The Code Book by Simon Singh 4 ⁄ 5 A fascinating walk through the history of cryptography! Great starting point!

BioTech 45

BioTech Social Media Entertainment Media 45

The Netflix TechBlog

MARCH 6, 2019

We parallelize rerun jobs with Titus , Netflix’s container management platform, which allows us to exercise many hundreds of replay files in minutes. Here’s an attempt to represent this logic with some pseudo code: [link] There is a limit on the throughput you can get out of a single HTTP connection to S3.

Media 220

Media Storage Processing Cache 220