Dynatrace

DECEMBER 10, 2020

Change starts by thoroughly evaluating whether the current architecture, tools, and processes for configuration, infrastructure, code delivery pipelines, testing, and monitoring enable improved customer experience faster and with high quality or not. Different teams have their own siloed monitoring solution.

Strategy 182

Strategy Performance Logistics Monitoring 182

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. In fact, that’s why we’ve fallen in love with online workshops — and have a full program scheduled for the months to come. Here’s what our workshops are like.

Design 86

Design Programming Testing Systems 86

Percona

DECEMBER 29, 2022

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. 1 amd64 front-end programs for PostgreSQL 11 ii postgresql-client-12 12.13-1.pgdg20.04+1

C++ 81

C++ Open Source Database Programming 81

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. So the approach taken by the authors is to use intrinsic watchdogs – these run concurrently with the main program inside the same process.

Systems 98

Systems Software Software Programming 98

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 231

Government DevOps Infrastructure Network 231

Smashing Magazine

DECEMBER 2, 2021

JVM Programming Advent Calendar. Advent of Code. If you prefer a puzzle over an article, take a look at Advent of Code. Created by Eric Wastl, this is an advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.

Design 107

Design Development Programming Website 107

Sutter's Mill

OCTOBER 16, 2011

As a tribute in honor of Dennis Ritchie’s passing , I’d like to invite you to share your thoughts in this post’s comments about your first C program – either the code if you remember it approximately, or a story about when you wrote it. After all, this was just a warm-up initial exercise for the course. Here’s mine.

C++ 40

C++ Programming Code Development 40

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. The reaction of both vendor and program office weren't much of a surprise.

Programming 59

Programming Testing Code Technology 59

The Agile Manager

AUGUST 31, 2022

The activist investor in a captive IT investment does the same things: interviews members of the team, reviews code, and analyzes status reports to develop alternative interpretations about the actual progress of and threats to a program or product.

Programming 52

Programming Cloud Code Development 52

O'Reilly

JUNE 13, 2023

It also generated a short program that implemented the widely used Miller-Rabin primality test. After fixing some obvious errors, I ran the program–and while it told me (correctly) that my number was non-prime, when compared to a known good implementation of Miller-Rabin, ChatGPT’s code made many mistakes.

Google 83

Google Programming Database Testing 83

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. In GotW #97 question 3, part of the solution says that “if an assertion fails” then… … there is a program bug, possibly in the assertion itself. in production). Dos Reis, J.

C++ 45

C++ Programming Cache Testing 45

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). Assertions are only about finding bugs, not doing program work.

C++ 58

C++ Programming Code Testing 58

Sutter's Mill

JUNE 3, 2021

Briefly, what is the difference among: (a) undefined behavior Undefined behavior is what happens when your program tries to do something whose meaning is not defined at all in the C++ standard language or library (illegal code and/or data).

C++ 54

C++ Programming Lambda Code 54

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. Changing these values at compile time is not intended for common use.

Database 99

Database Servers Open Source Tuning 99

MachMetrics

DECEMBER 12, 2019

While it is seen as a positive for users to be able to quickly see if the site they’re loading is slow, the ethics of such a program become a little murkier. The badging program could very well have a similar effect. Most stemmed from Google exercising too much power with this move.

Google 86

Google Website Best Practices Internet 86

ScaleOut Software

AUGUST 20, 2020

This allows application code to introspect on the dynamic behavior of each data source, maintain synthetic metrics which aid the analysis, and create alerts when conditions require. This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment.

Cloud 52

Cloud Development Analytics Azure 52

ScaleOut Software

AUGUST 20, 2020

This allows application code to introspect on the dynamic behavior of each data source, maintain synthetic metrics which aid the analysis, and create alerts when conditions require. This exercises the model’s code and surfaces issues and exceptions, which can be readily examined and resolved in a controlled environment.

Cloud 52

Cloud Development Analytics Azure 52

Sutter's Mill

MAY 1, 2023

The most general form of operator= is operator=: (out this, that) which works as a unified general {copy, move} x { constructor, assignment } operator, and generates all of four of those in the lowered Cpp1 code if you didn’t write a more specific one yourself (see Design Note linked above for details).

C++ 97

C++ Virtualization Lambda Code 97

Tasktop

OCTOBER 23, 2020

The code base has an open review process that every engineer can learn from with each change. We enjoy social hours such as team lunches, team exercises and happy hours. Would exercise and health be a good topic? We aim to continually learn, evolve and be better versions of ourselves.

Tuning 52

Tuning Engineering Programming Infrastructure 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 Starting with other interfaces is like writing your first Java program in [JVM bytecode].

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 Starting with other interfaces is like writing your first Java program in [JVM bytecode].

C++ 52

C++ Education Java AWS 52

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

The Morning Paper

DECEMBER 8, 2019

On the last morning of the conference Daniel Bittman presented some of the work being done in the context of the Twizzler OS project to explore new programming models for NVM. The starting point is a set of three asumptions for an NVM-based programming model: Compared to traditional persistent media, NVM is fast. What about security?

Hardware 56

Hardware Programming Media Storage 56

The Agile Manager

AUGUST 31, 2020

Decades of poor architecture guidelines and lax developer discipline resulted in the commercial-off-the-shelf components of an ERP becoming inseparable from the custom code built around it. The exercise of assessing, modeling and dispositioning the landscape does offer valuable new ways of looking at legacy assets.

Architecture 52

Architecture Code Strategy Programming 52

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? MPI is a commonly used standard to implement message-passing programs on computer clusters. The source code to the library may not be available.

Hardware 40

Hardware Transportation Performance Latency 40

Alex Russell

SEPTEMBER 20, 2020

"Appiness" is an illusion, an arbitrary line drawn to include programs built on some platforms but not others, and all of today's OSes allow multiple platforms to expose "real apps." Circa '07, those web apps were notably slower than native code could be. " Platforms, while plural, are not equal.

Hardware 64

Hardware Mobile Java Programming 64

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 98

Engineering Open Source Website Operating System 98

The Morning Paper

AUGUST 27, 2019

That paper was published back in 2014 and showed some tremendous performance benefits, so why aren’t we all programming with invariant confluent objects already?? Ideally we would have a general-purpose program that can automatically determine invariant confluence for us. A decision procedure for invariant confluence.

Programming 59

Programming Processing Database Systems 59

Nick Desaulniers

APRIL 18, 2014

“It’s written in ones and zeroes - binary code. At the lowest level, all computers are programmed with strings of ones and zeroes. When you program in machine language, you are controlling the computer at its brainstem, the root of its existence. For example in the code: 1. . “Is this another analogy?”

C++ 98

C++ Programming Code Virtualization 98

O'Reilly Software

MARCH 7, 2018

Software today is not typically a single program—something that is executed by an operator or user, producing a result to that person—but rather a service : something that runs for the benefit of its consumers, a provider of value. The most common programming task in the world. Let’s dive into this concept for a bit.

Transportation 72

Transportation Java Programming Architecture 72

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

Tasktop

OCTOBER 4, 2019

Navy during World War II who went on to create COBOL, one of the first programming languages? We all know about the genius of Alan Turing in cracking the Enigma code, turning WWII in the Allies’ favor. Laura concurs, suggesting that companies “s et up a mentor program for the women. What excites you about it?

Technology 40

Technology Technology Education Programming 40

The Morning Paper

APRIL 16, 2019

In the core programming model, students provide implementations of Node subclasses which specify the behaviour of individual nodes in their distributed systems. 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.

Systems 43

Systems Efficiency Testing Strategy 43

Randon ASCII

OCTOBER 20, 2019

The first digits of the addresses are different because the code is relocated on load, but the correspondence of the last four hex-digits (preserved over ASLR) is clear: RtlFindNextForwardRunClear: … 14006464F: 4C 3B C3 cmp r8,rbx. It is unclear why this code misbehaved so badly on this particular machine.

Processing 60

Processing Systems Code Software 60

Sutter's Mill

MARCH 25, 2021

Some of these are exercised by the “wrong order” permutations above, but even call sites that remember the right argument order can make mistakes about the actual values. We limit the code that is responsible for maintaining the boolean condition. is_reachable? Explain your answer. The benefits to writing a type include: Encapsulation.

C++ 45

C++ Design Code Systems 45

The Agile Manager

DECEMBER 17, 2008

Traditional IT projects are mass economy-of-scale exercises: once development begins, armies of developers are unleashed. Clearly, a small team delivering documentation is nowhere near as significant an event as a large team delivering executable code. An Agile team is not an exercise in scale.

Latency 40

Latency Code Metrics Testing 40

O'Reilly

OCTOBER 19, 2021

If you peek under the hood of an ML-powered application, these days you will often find a repository of Python code. Let’s start by considering the job of a non-ML software engineer: writing traditional software deals with well-defined, narrowly-scoped inputs, which the engineer can exhaustively and cleanly model in the code.

DevOps 138

DevOps Software Engineering Infrastructure Open Source 138