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

All Things Distributed

OCTOBER 2, 2017

We were pushing the limits of what was a leading commercial database at the time and were unable to sustain the availability, scalability and performance needs that our growing Amazon business demanded. Performant – The service would need to be able to maintain consistent performance in the face of diverse customer workloads.

Internet 128

Internet Internet AWS Performance 128

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

Tech News Gather

JUNE 15, 2023

In addition, it can also inculcate resources such as articles, podcasts, and breathing exercises to help users develop coping strategies and resilience. Users can access interactive maps, trail recommendations, and educational content highlighting ecological systems, biodiversity, and conservation efforts.

Education 52

Education Virtualization Innovation Transportation 52

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. Or worse yet, sometimes I get questions about regaining normal operations after a traffic increase caused performance destabilization.

Traffic 90

Traffic Cache Monitoring Database 90

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 78

Database Traffic C++ Servers 78

Dynatrace

JUNE 1, 2021

Application performance monitoring (APM) is the practice of tracking key software application performance metrics using monitoring software and telemetry data. Practitioners use APM to ensure system availability, optimize service performance and response times, and improve user experiences. Performance monitoring.

Monitoring 148

Monitoring Mobile Social Media Artificial Intelligence 148

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. Functional Testing Functional testing was the most straightforward of them all: a set of tests alongside each path exercised it against the old and new endpoints.

Latency 233

Latency Cache Java Traffic 233

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

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. This scan method can help get the best possible performance for the queries that fit its conditions.

Best Practices 92

Best Practices Tuning Database Testing 92

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

Adrian Cockcroft

NOVEMBER 11, 2019

A resilient system continues to operate successfully in the presence of failures. There are many possible failure modes, and each exercises a different aspect of resilience. Hence, one way to reduce risk is to make systems more observable. This discussion focuses on hardware, software and operational failure modes.

Latency 52

Latency Engineering Systems Hardware 52

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

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 at this very moment is negating and undermining the benefits from your optimization efforts?

Healthcare 40

Healthcare Retail Metrics Innovation 40

Adrian Cockcroft

NOVEMBER 11, 2019

A resilient system continues to operate successfully in the presence of failures. There are many possible failure modes, and each exercises a different aspect of resilience. Hence, one way to reduce risk is to make systems more observable. This discussion focuses on hardware, software and operational failure modes.

Latency 53

Latency Engineering Systems Hardware 53

Alex Russell

FEBRUARY 21, 2023

Recall that Cupertino manages the actual work of Safari engineers through Apple-internal systems (previously named "Radar" ), making public bug reports a sort of parallel track; once an issue is imported from a public bug to a private tracker, it's more likely to get developer attention. No, this was a change in strategy.

Energy 79

Energy Games Engineering Design 79

The Agile Manager

AUGUST 31, 2020

I've worked with quite a few companies for which long-lived software assets remain critical to day-to-day operations, ranging from 20-year-old ERP systems to custom software products that first processed a transaction way back in the 1960s. Several things stand out about these initiatives.

Architecture 52

Architecture Code Strategy Programming 52

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 only about finding bugs, not doing program work.

C++ 58

C++ Programming Code Testing 58

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. Shareability. It is arguable that in the modern era whether these clauses continue to provide the benefit intended.

Benchmarking 40

Benchmarking Database Social Media Scalability 40

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. There are people behind the systems to which we're bound today.

Strategy 40

Strategy Java Code Systems 40

The Morning Paper

NOVEMBER 14, 2019

The nodes for level of the tree are generated by performing balanced bipartitions that minimize edge cuts of the nodes in level. With users statically assigned to buckets during this weekly partitioning exercise, it remains to assign buckets of users to datacenters, which is done in an online fashion via a Stable Segment Assignment algorithm.

Traffic 42

Traffic Internet Internet Latency 42

O'Reilly Software

MARCH 7, 2018

Build a more scalable, composable, and functional architecture for interconnecting systems and applications. Welcome to a new world of data-driven systems. Today, data needs to be available at all times, serving its users—both humans and computer systems—across all time zones, continuously, in close to real time.

Transportation 72

Transportation Java Programming Architecture 72

Tasktop

OCTOBER 30, 2019

Scott Havens, Senior Director of Engineering at Mode Operandi, highlighted the benefits of event-based systems over legacy approaches, and how software architecture should be just as beautiful as the clothes on sale. He had a strategy. We identified 671 duplicate items between systems, saving 4,750 hours of unnecessary work.

DevOps 8

DevOps Education Innovation Metrics 8

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

Smashing Magazine

AUGUST 5, 2021

Or perhaps there is no mistake on our end at all, and it’s a system bug that’s absolutely out of our control. When large parts of the interface are disabled , most customers will assume that the system is busy , and some process is happening in the background on the page. Or we’ve overlooked some fine print somewhere.

Design 145

Design Transportation Code Systems 145

Strategic Tech

DECEMBER 12, 2019

If someone from a different culture with a different naming convention cannot be served by a system, it’s not good business or publicity. Transactional & Invariant Business Rules To enforce business rules in software systems, transactional boundaries need to be identified: which business rules must succeed or fail together.

Healthcare 10

Healthcare Software Architecture Database Software 10

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. We use this to debug errors and performance issues in specific mounts.

Media 214

Media Storage Processing Cache 214