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. It represents the percentage of time a system or service is expected to be accessible and functioning correctly. But the pressure on CIOs to innovate faster comes at a cost.

Traffic 173

Traffic Latency Website Virtualization 173

Smashing Magazine

SEPTEMBER 2, 2021

Over the last little while, I’ve been able to collect links to several interactive coding tools and apps that can help you supplement your skills in different areas of web development. This is a straightforward flexbox playground that also generates the code for you. On design systems, CSS/JS and UX. “code golf”).

Development 145

Development Games Education Programming 145

Testlodge

AUGUST 9, 2023

The tester established a baseline by selecting the most critical, common, or obvious path through the code selection. Steps to Performing Basis Path Testing The first step is to create a control flow graph for a specified code section. The second step is to select a baseline path through the code.

Testing 75

Testing Software Software C++ 75

Dynatrace

APRIL 5, 2024

In other words, where the application code resides. However, it’s essential to exercise caution: Limit the quantity of SLOs while ensuring they are well-defined and aligned with business and functional objectives. That said, the guiding thread, predominantly under the client’s control, remains the backend perspective.

Efficiency 217

Efficiency Traffic Tuning Metrics 217

The Netflix TechBlog

OCTOBER 21, 2019

As a streaming microservices ecosystem, the Mantis platform provides engineers with capabilities to minimize the costs of observing and operating complex distributed systems without compromising on operational insights. For example, a five-minute outage today is equivalent to a two-hour outage at the time of our last Mantis blog post.

Open Source 148

Open Source Metrics Engineering Processing 148

Dynatrace

MAY 15, 2020

How to assess an environment’s security posture, risk and threat profile, and possible attack vectors, where perhaps you didn’t code the application or build the infrastructure, and where new code is deployed frequently, and the infrastructure is constantly changing? And this poses a significant risk. Showing a list of key processes.

Government 218

Government DevOps Infrastructure Network 218

Dynatrace

DECEMBER 10, 2020

During the recent pandemic, organizations that lack processes and systems to scale and adapt to remote workforces and increased online shopping are feeling the pressure even more. Company brands are now measured by the “app” and “app experience” and expect every application to be as fast as Google.

Strategy 171

Strategy Performance Logistics Monitoring 171

The Morning Paper

APRIL 16, 2019

Teaching rigorous distributed systems with efficient model checking Michael et al., It describes the labs environment, DSLabs , developed at the University of Washington to accompany a course in distributed systems. Enabling students to build running performant versions of all of those systems in the time available is one challenge.

Systems 43

Systems Efficiency Testing Strategy 43

The Morning Paper

SEPTEMBER 24, 2019

50 ways to leak your data: an exploration of apps’ circumvention of the Android permissions system Reardon et al., Side-channels are typically an unintentional consequence of a complicated system. The OpenX SDK was found to be using the ARP cache side channel, and the code makes it clear the authors knew what they were doing.

Systems 74

Systems Traffic Network Google 74

The Netflix TechBlog

SEPTEMBER 8, 2020

On the Android team, while most of our time is spent working on the app, we are also responsible for maintaining this backend that our app communicates with, and its orchestration code. Image taken from a previously published blog post As you can see, our code was just a part (#2 in the diagram) of this monolithic service.

Latency 233

Latency Cache Java Traffic 233

The Netflix TechBlog

DECEMBER 23, 2020

By Fabio Kung , Sargun Dhillon , Andrew Spyker , Kyle , Rob Gulewich, Nabil Schear , Andrew Leung , Daniel Muino, and Manas Alekar As previously discussed on the Netflix Tech Blog, Titus is the Netflix container orchestration system. It runs a wide variety of workloads from various parts of the company?—?everything

Media 286

Media Metrics Systems Processing 286

Smashing Magazine

OCTOBER 13, 2021

You can always ask a question live , you can share your screen and get immediate feedback, and you can work on group exercises with people around the world. Live discussions and interactive exercises are at the very heart of every workshop, with group work, homework, reviews and live interaction with people around the world.

Design 86

Design Programming Testing Systems 86

Percona

OCTOBER 31, 2023

The process of gathering data will take some time, but we plan to periodically share statistics that we collect, like breakdowns of versions of database software being used or popular operating systems and architectures. Check our code You can check the telemetry module’s code in our GitHub repository: [link] Do you have feedback?

Open Source 89

Open Source Database Operating System Programming 89

The Netflix TechBlog

OCTOBER 21, 2019

As a streaming microservices ecosystem, the Mantis platform provides engineers with capabilities to minimize the costs of observing and operating complex distributed systems without compromising on operational insights. For example, a five-minute outage today is equivalent to a two-hour outage at the time of our last Mantis blog post.

Open Source 101

Open Source Metrics Engineering Processing 101

The Netflix TechBlog

OCTOBER 21, 2019

As a streaming microservices ecosystem, the Mantis platform provides engineers with capabilities to minimize the costs of observing and operating complex distributed systems without compromising on operational insights. For example, a five-minute outage today is equivalent to a two-hour outage at the time of our last Mantis blog post.

Open Source 100

Open Source Metrics Engineering Processing 100

Dynatrace

APRIL 21, 2022

Using high-fidelity metrics, logs, code-level tracing, and a dynamic topology map of your applications, Davis can identify the precise root cause and prioritize its business impact. To optimize your back-end systems, you can use the service flow view within Dynatrace to identify layers of application architecture. Reliability.

Azure 181

Azure Monitoring Virtualization Metrics 181

Percona

DECEMBER 29, 2022

While working as a DBA, we perform many regular tasks, and one of them is upgrading our database systems. In this blog post, I will show you a particular example I faced when working with an upgrade exercise using pg_upgrade. When working with the upgrade exercise, the goal was to move from PostgreSQL 11 to PostgreSQL 12.

C++ 82

C++ Open Source Database Programming 82

The Netflix TechBlog

MAY 27, 2020

Reliability, formally speaking, is the ability of a system to function under stated conditions for a period of time. Put simply, reliability means a system should work and continue working. assisting the responding service owners with understanding what systems are contributing to the incident Liaison?—?communicating

Engineering 104

Engineering Innovation Systems Architecture 104

Percona

AUGUST 8, 2023

As such, one of the more common questions I get from my clients is whether or not their system will be able to endure an anticipated load increase. Does your traffic increase come with updated code changes that change the queries? When you saturate disk IOPS, your system is going to run slow. Do these queries use more caches?

Traffic 89

Traffic Cache Monitoring Database 89

Particular Software

MARCH 28, 2022

You can create a class that is a lousy saga but is still perfectly valid C# code. With Roslyn analyzers and code fixes , we can now do a lot better and help guide you toward the pit of success. This will save you time, as you won’t have to run your code to find out that you can’t use DateTime as a correlation property type.

Development 52

Development C++ Virtualization Metrics 52

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. cat /usr/lib/systemd/system/postgresql-14.service. But another database might be an OLAP system.

Database 102

Database Servers Open Source Tuning 102

The Netflix TechBlog

MARCH 6, 2019

Mounting object storage in Netflix’s media processing platform By Barak Alon (on behalf of Netflix’s Media Cloud Engineering team) MezzFS (short for “Mezzanine File System”) is a tool we’ve developed at Netflix that mounts cloud objects as local files via FUSE. MezzFS can be configured to cache objects on the local disk. Regional caching? —?Netflix

Media 214

Media Storage Processing Cache 214

O'Reilly

JUNE 27, 2023

When a person clicked “submit,” the website would pass that form data through some backend code to process it—thereby sending an e-mail, creating an order, or storing a record in a database. That code was too trusting, though. Red-team exercises can uncover weaknesses in the system while it’s still under development.

Social Media 89

Social Media Media Website Database 89

Tasktop

FEBRUARY 24, 2021

Get together once a year for a value stream mapping exercise, and you’ll emerge with a list of potential improvement hypotheses. . But from all those hotspots, identifying the system constraint , the one big, juicy bottleneck that is at this very moment is negating and undermining the benefits from your optimization efforts?

Healthcare 52

Healthcare Retail Metrics Innovation 52

Dynatrace

JUNE 1, 2021

Practitioners use APM to ensure system availability, optimize service performance and response times, and improve user experiences. Causes can run the gamut — from coding errors to database slowdowns to hosting or network performance issues. Mobile apps, websites, and business applications are typical use cases for monitoring.

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

J. Paul Reed

AUGUST 7, 2023

(It’s worth noting: the right end of the spectrum also covers the more… “exotic” action items, like “This was caused by a Windows-issue, so let’s migrate our entire self-run physical infrastructure to Linux and rewrite the entire code base.” In practice (and I’ve done this exercise with teams), this spectrum can provide useful insight.

Engineering 52

Engineering Hardware Games Infrastructure 52

Dynatrace

SEPTEMBER 20, 2019

Let’s assume your team has just pushed new code and it passed pre-deployment testing. But wait, there is more: Davis doesn’t just tell what exactly happened; it also understands how everything is connected—the relationships and interdependencies between each layer, component, and bit of code in your application environment.

Systems 26

Systems Traffic DevOps Database 26

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. Therefore, before we attempt to measure our database performance, we should know the system or cloud instance to be tested in detail. Operating System: Ubuntu 22.04 Operating System: Ubuntu 22.04

Performance 54

Performance Benchmarking Cache Storage 54

The Agile Manager

OCTOBER 31, 2020

It had licensed a workflow technology and contracted a large number of people to code and configure a custom solution around it. The rules were implemented as IFTTT statements in a low-code language that did not allow them to be tested in isolation. When that happens, the exercise tends to yield no better than "less bad."

Programming 59

Programming Testing Code Technology 59

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

The Agile Manager

AUGUST 31, 2021

If we accept the fact that Agile is a value system and not a set of mechanical processes, it stands to reason that there must be something different about the norms and behaviors of Agile managers vis-a-vis traditional managers. They all had characteristics that are applicable to all management roles.

Metrics 52

Metrics Design Engineering C++ 52

The Morning Paper

JANUARY 23, 2020

The process tracing exercise included: Examning IRC transcripts from multiple channels. Gathering timestapms of changes made to application code during the outage. A coded timelime was created dividing activities into three main types: Coordination activities. First look for any correlation to the last change made to the system.

Internet 53

Internet Internet Cache Engineering 53

Testsigma

MARCH 6, 2020

Regression testing comprises re-running the test cases of already stable features and finding out if the new code changes attributed to the new release led to any negative impacts on the existing functionalities. Regression checks should start as soon as a new build is released for testing and should be repeated for every new code build.

Best Practices 52

Best Practices Testing Code Testing Tools 52

Sutter's Mill

JANUARY 11, 2021

Assertions have been a foundational tool for writing understandable computer code since we could write computer code… far older than C’s assert() macro, they go back to at least John von Neumann and Herman Goldstine (1947) and Alan Turing (1949). Run-time errors should be reported using exceptions, error codes, or similar.

C++ 58

C++ Programming Code Testing 58

Sutter's Mill

JANUARY 25, 2021

We want a way to enable checking for some assertions but not others in the same code, because we may not always be able to afford expensive checks. If you develop your own assertion system for in-house use, support enabling/disabling at least these kinds of assertions independently. [1] in production).

C++ 45

C++ Programming Cache Testing 45

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 107

Design Development Programming Website 107