O'Reilly

OCTOBER 19, 2021

While there isn’t an authoritative definition for the term, it shares its ethos with its predecessor, the DevOps movement in software engineering: by adopting well-defined processes, modern tooling, and automated workflows, we can streamline the process of moving from development to robust production deployments. Who did what and when?

DevOps 137

DevOps Software Engineering Infrastructure Open Source 137

Dynatrace

MAY 28, 2020

You may have seen over the past few months we have been extensively promoting Service Level Indicators (SLIs) and Service Level Objectives (SLOs) as part of our Open Source project Keptn. The app description and supporting files such as load testing scripts are on the Keptn Example GitHub. This is what this blog is all about.

Engineering 195

Engineering Performance Metrics Best Practices 195

Percona

DECEMBER 5, 2023

The scenario Service considerations In this exercise, we wanted to perform a major version upgrade from PostgreSQL v12.16 While we’ve contemplated taking a physical backup and conducting PITR , it’s worth noting that PITR can also be executed on the existing replica or delayed replica to expedite the process. and a v15.4.

Database 74

Database Traffic C++ Servers 74

O'Reilly

JANUARY 17, 2023

You might say that the outcome of this exercise is a performant predictive model. Second, this exercise in model-building was … rather tedious? If you’re a professional data scientist, you already have the knowledge and skills to test these models. That’s sort of true. Get your results in a few hours.

Tuning 128

Tuning Open Source AWS Software 128

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. We will not concern ourselves with the raw throughput of workload.

Performance 54

Performance Benchmarking Cache Storage 54

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. A change to such parameters requires the postmaster — the main process of the PostgreSQL — to restart. Here is an example of the function definition to test the function-level settings.

Database 99

Database Servers Open Source Tuning 99

Percona

JULY 6, 2023

then true else false end FROM generate_series(1, 10000000); Now we have our test table with some dummy data so we can practice. then true else false end FROM generate_series(1, 10000000); Now we have our test table with some dummy data so we can practice. Next is the table definition.

Best Practices 87

Best Practices Tuning Database Testing 87

Alex Russell

AUGUST 30, 2021

WebKit is an open-source web engine that allows Apple to enable improvements contributed by third parties. Apple's Open Source Claim #. The open source nature of WebKit is indisputable as a legal technicality. It's worth assessing these claims from most easily falsified to most contested.

Engineering 98

Engineering Open Source Website Operating System 98

MachMetrics

JANUARY 4, 2019

PageSpeed is an open source project. If you aren’t familiar with open source, it doesn’t exactly mean what you might think. Work with a test box first before actually implementing the module into your server architecture. Good website performance is part of that equation.

Speed 60

Speed Website Open Source Google 60

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. When finally we had all the processes migrated, we celebrated as we decommissioned Public102. Ultimately, this comes down to testing.

Wireless 52

Wireless DevOps Infrastructure Network 52

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

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

HammerDB

JANUARY 5, 2019

Some opinions claim that “Benchmarks are meaningless”, “benchmarks are irrelevant” or “benchmarks are nothing like your real applications” However for others “Benchmarks matter,” as they “account for the processing architecture and speed, memory, storage subsystems and the database engine.”

Benchmarking 40

Benchmarking Database Social Media Scalability 40

The Morning Paper

APRIL 16, 2019

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. Testing and model checking. It’s hard to exhaustively test a distributed system with traditional testing techniques.

Systems 43

Systems Efficiency Testing Strategy 43

O'Reilly Software

MARCH 7, 2018

Working with never-ending streams of data necessitates continuous processing of it, ensuring the system keeps up with the load patterns it is exposed to, and always provides real-time, up-to-date information. 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

Brendan Gregg

NOVEMBER 13, 2017

There's also the "[No A **e Rule]", popularized by a bestselling book of this title, which provides the following [test]: 1. Here's a test for you or your company: Would you tolerate a brilliant engineer who is also an a **e? Alice is great at fixing hard bugs, writing test suites, doing code merges, and other unglamorous work.

Engineering 111

Engineering Energy Technology Technology 111