CSS Wizardry

NOVEMBER 3, 2020

A couple of years ago, my first few days on a new web performance project were always slow going. Unless a client hires you to specifically improve the performance of one page, you’ll need a broad view of the whole site or application. Any time you run a test with WebPageTest, you’ll get this table of different milestones and metrics.

Speed 292

Speed Ecommerce Metrics Analytics 292

The Netflix TechBlog

SEPTEMBER 8, 2020

Over the course of this post, we will talk about our approach to this migration, the strategies that we employed, and the tools we built to support this. For the migration, testing was a first-class citizen. Replay Testing Enter replay testing.

Latency 233

Latency Cache Java Traffic 233

Scalegrid

APRIL 16, 2020

In this post, we compare ScaleGrid’s Bring Your Own Cloud (BYOC) plan vs. the standard Dedicated Hosting model to help you determine the best strategy for your MySQL, PostgreSQL, Redis™ and MongoDB® database deployment. This allows you to leverage external plugins and tools to better support your deployment and improve performance.

Cloud 242

Cloud Azure AWS Database 242

Percona

DECEMBER 5, 2023

The scenario Service considerations In this exercise, we wanted to perform a major version upgrade from PostgreSQL v12.16 The 1-2-3 Steps Per the title of this post, the next is the list of steps to perform the PITR, then pg_upgrade to v15.4, Start the new instance to perform the PITR with LSN Start the new PostgreSQL instance.

Database 77

Database Traffic C++ Servers 77

Percona

JULY 6, 2023

Performance is one of the essential aspects of a database management system. Very little can be more annoying and frustrating for users than poor performance, meaning long-running queries and high response times at the front end. Next is the table definition.

Best Practices 91

Best Practices Tuning Database Testing 91

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. . Companies gain speed by eliminating rework, which requires a test-first approach.” . Example of Bottleneck Visualization: Notable outlier before QA in the Dev Test Complete state. “I

Healthcare 52

Healthcare Retail Metrics Innovation 52

SQL Performance

JANUARY 12, 2022

This month, I'm going to start exploring the submitted solutions, roughly, going from the worse performing to the best performing ones. Why even bother with the bad performing ones? This article is dedicated to this poor performing approach. Despite the poor performance, working on the solution is an interesting exercise.

Code 116

Code Servers Performance Azure 116

Sutter's Mill

JANUARY 11, 2021

And asserted conditions only evaluated if they’re enabled, so any side effects won’t happen when they’re not enabled; they might sometimes perform local side effects, such as to do logging or allocate memory, but the program should never rely on them happening or not happening. Assertions are primarily about finding bugs at test time.

C++ 58

C++ Programming Code Testing 58

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. . Companies gain speed by eliminating rework, which requires a test-first approach.” . Example of Bottleneck Visualization: Notable outlier before QA in the Dev Test Complete state. “I

Healthcare 40

Healthcare Retail Metrics Innovation 40

Alex Russell

FEBRUARY 21, 2023

By mandating proof of developer enthusiasm for features, extensive test suites, and accurate specifications, the catch-up process has been put on rails for Apple. No, this was a change in strategy. as an (eventual) exercise of monopolistic power that held the web back for more than a decade? But needs must.

Energy 79

Energy Games Engineering Design 79

HammerDB

JANUARY 5, 2019

This post addresses some of the opinions around database benchmarking and gives the top 5 reasons why industry standard benchmarking is important and should be an essential foundation of your database engineering strategy. If you change something and re-run the same test the difference in the results can be attributed to the changes you made.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

The Morning Paper

JANUARY 23, 2020

With only an hour or so of degraded performance in the end, it’s not the worst incident you can imagine, but it was clearly taken as very serious given the time of year. The process tracing exercise included: Examning IRC transcripts from multiple channels. First look for any correlation to the last change made to the system.

Internet 53

Internet Internet Cache Engineering 53

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. In the same way that we have moved from a few big software releases a year to continuous delivery of many small changes, we need to move from annual disaster recover tests or suffering when things actually break, to continuously tested resilience.

Latency 52

Latency Engineering Systems Hardware 52

The Morning Paper

APRIL 16, 2019

Enabling students to build running performant versions of all of those systems in the time available is one challenge. Testing and grading their solutions is another! Although we added tests to catch specific issues as we learned of them, we found it difficult to keep up with the diversity of possible student errors.

Systems 43

Systems Efficiency Testing Strategy 43

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. In the same way that we have moved from a few big software releases a year to continuous delivery of many small changes, we need to move from annual disaster recover tests or suffering when things actually break, to continuously tested resilience.

Latency 53

Latency Engineering Systems Hardware 53

Sutter's Mill

FEBRUARY 17, 2020

Otherwise, you’ll either get the implicitly generated move functions, or else requests to move will automatically just do a copy instead, since copy is always a valid implementation of move (it just doesn’t exercise the non- const option). Yes, in my view it does make it a buggy class that shouldn’t pass code review.

C++ 98

C++ Testing Design Strategy 98

The Agile Manager

AUGUST 31, 2020

A basic premise is that there are alternatives to traditional "lift and shift" strategies by retiring legacy assets in a piecemeal fashion. The exercise of assessing, modeling and dispositioning the landscape does offer valuable new ways of looking at legacy assets. Several things stand out about these initiatives.

Architecture 52

Architecture Code Strategy Programming 52

The Agile Manager

FEBRUARY 28, 2017

Management textbooks dating at least as far back as the 1980s included stories of employees performing tasks the reasons for which they didn't really understand. There aren't a lot of high cards we can draw, but playing them in the right combination offers us a strategy. This month, we look at our options for re-acquiring it.

Strategy 40

Strategy Java Code Systems 40

Dynatrace

SEPTEMBER 20, 2019

One of the several deployment strategies is the blue/green deployment approach: In this method, two identical production environments work in parallel. The new version of the application is deployed in the green environment and tested for functionality and performance. Both use the same database back-end and app configuration.

Systems 26

Systems Traffic DevOps Database 26

O'Reilly Software

MARCH 7, 2018

This is mixing concerns and leads to code that becomes strongly coupled, monolithic, hard to write, hard to read, hard to evolve, hard to test, and hard to reuse. Its strategies for flow control are either stop-and-wait (i.e., Sadly, it is very common to write logic that deeply couples the notion of IO with the processing of that IO.

Transportation 72

Transportation Java Programming Architecture 72

Smashing Magazine

AUGUST 19, 2021

Once you create your own code of ethics, you might notice an improvement not only in your team’s work and performance but also in the team’s culture as well. If there is strong disagreement between one or more principles that some feel should be combined while others feel should be separate, then run a dot-voting prioritization exercise.

Code 137

Code Design Education Government 137

Tasktop

OCTOBER 30, 2019

Over the past months, a number of Fortune 100 customers have been testing Tasktop’s new product, Tasktop Viz , to implement the Flow Framework. He had a strategy. It was no longer about why my team wasn’t performing, but why isn’t the organization performing. Day two recap. Chris had his sales hat on,” continued Aho. “He

DevOps 8

DevOps Education Innovation Metrics 8

Smashing Magazine

AUGUST 5, 2021

And because something is happening, they usually exercise a good amount of patience first. And as such, it’s a quite dangerous and fragile undertaking, because we never know with absolute certainty how bulletproof our code is, even although it might be heavily tested. The Downsides Of Disabled Buttons. Chances are high that it won’t.

Design 145

Design Transportation Code Systems 145

Smashing Magazine

AUGUST 9, 2021

Refactoring CSS: Strategy, Regression Testing And Maintenance written by Adrian Bece. She is the Principal Designer at 8th Light, where she designs and builds custom software and consults on safe and inclusive design strategy. Eva on Twitter. Eva’s personal site. Weekly Update. Hi, Eva, how are you? Eva: Yeah, absolutely.

Design 98

Design Education Network Google 98

The Netflix TechBlog

MARCH 6, 2019

during a typical week at Netflix, MezzFS performs ~100 million mounts for dozens of different use cases and streams about ~25 petabytes of data. We use this to debug errors and performance issues in specific mounts. More on this below… Adaptive buffering ?—?More How much faster is this? Sequentially read 1GB from a remote object.

Media 214

Media Storage Processing Cache 214

The Agile Manager

OCTOBER 26, 2011

There are a lot of things that go into this, too much to cover in this blog post, so we'll focus on three: investment flow, hedging strategies, and activist investing. Agile inception gives us a simple litmus test to apply to any candidate investment, and it doesn’t cost a lot to apply it. Clearly, some ideas are better than others.

Government 40

Government Strategy Technology Technology 40