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

Dynatrace

JUNE 1, 2021

Application performance monitoring focuses on specific metrics and measurements; application performance management is the wider discipline of developing and managing an application performance strategy. Causes can run the gamut — from coding errors to database slowdowns to hosting or network performance issues.

Monitoring 149

Monitoring Mobile Social Media Artificial Intelligence 149

The Morning Paper

JANUARY 23, 2020

In this study, the diagnosis and resolution of an outage in a global Internet service, Etsy.com, was explored in an effort to uncover which cognitive strategies (specifically, heuristics) are used by engineers as they work to bring the service back to a stable state. Gathering timestapms of changes made to application code during the outage.

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. Another problem is that a design control, intended to mitigate a failure mode, may not work as intended. STPA is based on a functional control diagram of the system, and the safety constraints and requirements for each component in the design.

Latency 52

Latency Engineering Systems Hardware 52

The Agile Manager

AUGUST 31, 2020

In some cases, if only a very few, these assets continue to be used because they still work very well, were thoughtfully designed, and have been well cared for over the years. A basic premise is that there are alternatives to traditional "lift and shift" strategies by retiring legacy assets in a piecemeal fashion.

Architecture 52

Architecture Code Strategy Programming 52

Adrian Cockcroft

NOVEMBER 11, 2019

There are many possible failure modes, and each exercises a different aspect of resilience. Another problem is that a design control, intended to mitigate a failure mode, may not work as intended. STPA is based on a functional control diagram of the system, and the safety constraints and requirements for each component in the design.

Latency 53

Latency Engineering Systems Hardware 53

The Morning Paper

APRIL 16, 2019

We would like students to consider the performance characteristics of their systems, and our tests check that their designs attain reasonable run-time performance. Consider the lab exercise to implement Paxos. It’s hard to exhaustively test a distributed system with traditional testing techniques. So DSLabs also uses model checking.

Systems 43

Systems Efficiency Testing Strategy 43

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. I found a lot of value in the Coverage panel in DevTools because it will show just how much code is being used after everything’s downloaded. Lighthouse.

Cache 92

Cache Social Media Media Website 92

Sutter's Mill

FEBRUARY 17, 2020

Thank you to the following for their feedback on drafts of this material: Howard Hinnant (lead designer and author of move semantics), Jens Maurer, Arthur O’Dwyer, Geoffrey Romer, Bjarne Stroustrup, Andrew Sutton, Ville Voutilainen, Jonathan Wakely. Yes, in my view it does make it a buggy class that shouldn’t pass code review.

C++ 98

C++ Testing Design Strategy 98

Smashing Magazine

AUGUST 5, 2021

Frustrating Design Patterns: Disabled Buttons. Frustrating Design Patterns: Disabled Buttons. After all, as designers and developers, we want to make it more difficult for our users to make mistakes. Part Of: Design Patterns. And because something is happening, they usually exercise a good amount of patience first.

Design 145

Design Transportation Code Systems 145

Dynatrace

SEPTEMBER 20, 2019

Welcome back to the blog series in which we show how you can easily solve three common problem scenarios by using Dynatrace and xMatters Flow Designer. One of the several deployment strategies is the blue/green deployment approach: In this method, two identical production environments work in parallel. Dynatrace news.

Systems 26

Systems Traffic DevOps Database 26

Smashing Magazine

AUGUST 19, 2021

Ethics are an important part of human-computer interaction because they keep people at the heart of the design process. 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. Devin Harold. Large preview ).

Code 137

Code Design Education Government 137

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

Tasktop

OCTOBER 30, 2019

He demonstrated how a more elegant functional design—combining immutability, purity, and duality of code and data—can save larger enterprises millions of dollars, as demonstrated by his previous work at Walmart. He had a strategy. Compliance by design is a cool concept, makes life easier for developers.

DevOps 8

DevOps Education Innovation Metrics 8

Strategic Tech

DECEMBER 12, 2019

We have to specify with great precision in code exactly what our business rules are, and the computer will apply them exactly as we tell it to. Defining Aggregate Boundaries Deciding that specific business operations should succeed or fail together sounds like a simple requirements gathering exercise. But there is a problem?

Healthcare 10

Healthcare Software Architecture Database Software 10

The Netflix TechBlog

MARCH 6, 2019

Video encoding is what MezzFS was originally designed for and remains one of its canonical use cases, so we’ll focus on video encoding to describe the problem that MezzFS solves. We parallelize rerun jobs with Titus , Netflix’s container management platform, which allows us to exercise many hundreds of replay files in minutes.

Media 214

Media Storage Processing Cache 214