Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. Amazon even provides an official [recommendation] (2021): "For EC2 instances launched on the AWS Xen Hypervisor, it's a best practice to use the tsc clock source.

Speed 126

Speed Java AWS Virtualization 126

The Netflix TechBlog

AUGUST 30, 2021

Upstream event sourcing was fully enabled on the producer side at around 2021–07–15 15:00 PST. However, it can be adjusted by tuning the max-poll-interval-ms and max-poll-records configuration values, which need to be somehow determined empirically beforehand for best performance.

Latency 219

Latency Traffic Transportation Cloud 219

Dynatrace

JANUARY 13, 2021

Dynatrace’s OneAgent automatically captures PurePaths and analyzes transactions end-to-end across every tier of your application technology stack with no code changes, from the browser all the way down to the code and database level. Stay tuned for an upcoming Performance Clinic !

Open Source 139

Open Source Code Monitoring Azure 139

O'Reilly

MAY 25, 2021

Such an algorithm might pick up the Gamestop stock frenzy of January 2021. It is likely that entire companies will be in the business of identifying these nuances and selling them as “fingerprint databases” for identifying fake news articles. Figure 3: GPT-3 generated fake news linking the $GME short-squeeze to North Korea.

Social Media 140

Social Media Media Internet Internet 140

SQL Performance

OCTOBER 18, 2022

In my examples, I’ll use the sample database TSQLV6. You can download the script file to create and populate this database here and find its ER diagram here. For example, to filter orders placed in 2021, the recommended way to write the query is like so (I’ll call this Query 7): SELECT orderid , orderdate FROM Sales.

Servers 144

Servers Code Best Practices Database 144

HammerDB

FEBRUARY 25, 2021

HammerDB is a load testing and benchmarking application for relational databases. All the databases that HammerDB tests implement a form of MVCC (multi-version concurrency control). On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute.

Programming 67

Programming Benchmarking Virtualization C++ 67

Brendan Gregg

SEPTEMBER 25, 2021

A Cassandra database cluster had switched to Ubuntu and noticed write latency increased by over 30%. top(1) showed that only the Cassandra database was consuming CPU. Amazon even provides an official [recommendation] (2021): "For EC2 instances launched on the AWS Xen Hypervisor, it's a best practice to use the tsc clock source.

Speed 40

Speed Java AWS Virtualization 40

The Netflix TechBlog

JULY 26, 2021

In the initial stage, data consumers set up ETL pipelines directly pulling data from databases. With this batch style approach, several issues have surfaced like data movement is tightly coupled with database tables, database schema is not an exact mapping of business data model, and data being stale given it is not real time etc.

Big Data 256

Big Data Government Analytics Processing 256

The Netflix TechBlog

MAY 14, 2021

Once you finally find useful identifiers, you may begin writing SQL queries against your production database to find out what went wrong. Even though Cosmos was developed for asynchronous media processing, we worked with them to expand to generic file processing and tune their workflow platform for our near real-time use case.

Traffic 164

Traffic Latency Java Google 164

Official Blog - World Web Technology

FEBRUARY 23, 2023

Stay tuned! Well, we don’t have an idea, but we have noticed that Google has already cut down greatly on the number of crawling and indexing websites since 2021. It is to find and add websites to their databases. In this post, we will discuss some of the top SEO trends for 2023 that you cannot miss.

Google 52

Google Traffic Social Media Website 52

SQL Performance

SEPTEMBER 2, 2021

UPDATE: September 2nd, 2021 (Originally published July 26th, 2012.). A lot of things change over the course of a few major versions of our favorite database platform. He spent a lot of time fine-tuning this CLR function to efficiently parse a string. It’s fast, too, but it’s not perfect. Splitting Strings : Now with less T-SQL.

C++ 59

C++ Servers Testing Database 59

Smashing Magazine

OCTOBER 22, 2021

2021-10-22T09:30:00+00:00. 2021-10-22T12:05:30+00:00. database and outputs the game PIN as a response. database and displayed on the “Create” page. Supabase makes it very easy to create a PostgreSQL database and access it either via one of its client libraries or via REST. Martin Grubinger. Large preview ).

Games 97

Games Servers Database Virtualization 97

O'Reilly

JULY 25, 2023

I guessed that maybe ChatGPT only knew about v2 since it was trained on open-source code from before September 2021 (its knowledge cutoff date) and v2 was the dominant format before that date. For a few years now Google has been transitioning developers to v3 , which I didn’t know about since I had no prior experience with Chrome extensions.

Programming 98

Programming Code Design Benchmarking 98