SQL Performance

MARCH 29, 2022

For the time being, let’s look at some examples using the Stack Overflow 2010 database on SQL Server 2019 CU 14. Database compatibility is set to 150, and the cost threshold for parallelism is set to 50 to avoid parallelism for now: ALTER DATABASE SCOPED CONFIGURATION. I’ll cover the reasons for the guessing later in the series.

Cache 90

Cache Servers Database Testing 90

O'Reilly

MARCH 26, 2024

It takes the prompt and just returns one of the most similar “training documents” it has in its database, verbatim. In “ How Photos of Your Kids Are Powering Surveillance Technology ,” The New York Times reported that One day in 2005, a mother in Evanston, Ill., At the other end of the extreme consider a search engine.

Artificial Intelligence 111

Artificial Intelligence Social Media Google Internet 111

Brendan Gregg

NOVEMBER 29, 2017

It's amazing to recall that it was even possible to virtualize x86 before processors had hardware-assisted virtualization (Intel VT-x and AMD-V), which were added in 2005 and 2006. But not all workloads: some are network bound (proxies) and storage bound (databases). ## 5. . --> Remember the original VMware x86 hypervisor from 1998?

Virtualization 110

Virtualization AWS Hardware Storage 110

KeyCDN

MARCH 28, 2019

They are responsible for the implementation of database systems, ensuring proper communication between various web services, generating backend functionality, and more. Laravel also offers its own database migration system and has a robust ecosystem. Backend developers work with a wide range of libraries, APIs, web services, etc.

Programming 77

Programming Website Scalability Design 77

SQL Server Performance

NOVEMBER 10, 2017

Recently we started experiencing a very strange issue in our production reporting environment where the Re-indexing and Update Statistics operation suddenly began taking more than 2 days to complete and was thus causing blockage in the database which in turn caused impairment in application performance.

Tuning 40

Tuning Performance Servers Database 40

Adrian Cockcroft

JANUARY 31, 2023

Their database model later become known as NoSQL, although it was implemented on top of Oracle, each database held one table and indexes, and there were many sharded Oracle databases for each data set so it could be scaled horizontally as well.

Google 52

Google Transportation Programming Innovation 52

SQL Performance

MARCH 30, 2021

I used the public Stack Overflow 2013 database ( download details ). The fundamentals of row mode parallel execution haven’t changed since SQL Server 2005, so the following discussion is broadly applicable. To provide a concrete basis for the analysis, we will follow how a particular parallel query starts execution. MonthlyPosts AS. (

Cache 98

Cache Servers Processing Operating System 98

SQL Performance

JULY 1, 2021

These types are on the deprecated list for many reasons, and have held a permanent spot on that list since being replaced by the max types way back in SQL Server 2005. Let's create a simple database with a few tables: CREATE DATABASE BadIdeas ; GO. USE BadIdeas ; GO. CREATE TABLE dbo. [ object_id ] WHERE p.

C++ 58

C++ Database Servers Performance 58

SQL Performance

MARCH 22, 2022

This series doesn’t dwell too long on the basics but concentrates on less well-known aspects likely to trip up even the most experienced database professionals. When SQL Server 2005 introduced Forced Parameterization , the existing auto-parameterization feature was renamed to Simple Parameterization. Simple Parameterization.

Cache 61

Cache Servers Database Code 61

SQL Performance

AUGUST 12, 2020

In my examples I’ll use a sample database called TSQLV5. So it could be that the term originated in one of the database products and later adopted by some of the other database vendors. So it could be that the term originated in one of the database products and later adopted by some of the other database vendors.

C++ 140

C++ Code Design Database 140

ScaleOut Software

JUNE 22, 2020

When first introduced, distributed caching offered a breakthrough for applications by storing fast-changing data in memory on a server cluster for consistently fast response times, while simultaneously offloading database servers that would otherwise become bottlenecked.

Ecommerce 52

Ecommerce Cache Scalability IoT 52

ScaleOut Software

JUNE 22, 2020

When first introduced, distributed caching offered a breakthrough for applications by storing fast-changing data in memory on a server cluster for consistently fast response times, while simultaneously offloading database servers that would otherwise become bottlenecked.

Ecommerce 52

Ecommerce Cache Scalability IoT 52

SQL Performance

FEBRUARY 22, 2021

The system table sys.sysprocesses was replaced way back in SQL Server 2005 by a set of dynamic management views (DMVs), most notably sys.dm_exec_requests , sys.dm_exec_sessions , and sys.dm_exec_connections. I would like to share a couple of recent examples that help illustrate how using deprecated SQL Server features continues to bite us.

Latency 57

Latency Servers Monitoring Systems 57

SQL Performance

SEPTEMBER 29, 2021

In SQL Server 2005, I started using schemas to hold shadow copies of tables I simply transferred around using the same shell game technique, which I wrote about in these two posts: Trick Shots: Schema Switch-a-Roo. First, we’ll create two new databases: CREATE DATABASE NewWay ; CREATE DATABASE OldWay ; GO. seconds.

Servers 55

Servers Games Database Processing 55

SQL Server According to Bob

JUNE 3, 2016

“SQL Server 2016 running on the same hardware as SQL Server 2014, 2012, 2008, 2008 R2 or 2005 uses fewer resources and executes a wide range of workloads faster. SQL 2016 – It Just Runs Faster: -T1117 and -T1118 changes for TEMPDB and user databases. SQL 2016 – It Just Runs Faster: In-Memory Optimized Database Worker Pool.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

Highly Scalable

MARCH 10, 2015

Jain, 2005. van Ryzin, 2005. VL02] The True Lift Model – A Novel Data Mining Approach to Response Modeling in Database Marketing, V. [JZ10] Recommender Systems: An Introduction, D. Jannach, M. Felfernig, G. Friedrich, 2010. KJ05] An Empirical Analysis of Price Discrimination Mechanisms and Retailer Profitability, R.

Retail 152

Retail C++ Analytics Metrics 152

Brendan Gregg

NOVEMBER 28, 2017

It's amazing to recall that it was even possible to virtualize x86 before processors had hardware-assisted virtualization (Intel VT-x and AMD-V), which were added in 2005 and 2006. But not all workloads: some are network bound (proxies) and storage bound (databases). ## 5. . --> Remember the original VMware x86 hypervisor from 1998?

Virtualization 40

Virtualization AWS Hardware Storage 40

SQL Server According to Bob

JANUARY 11, 2020

KB sectors run on smaller sectors   14 System and sample databases   15 Determining the formatted sector size of database   15 What sector sizes does SQL Server support? KB boundary   12 Larger transaction logs   13 Restore and attach   14 Format for 4 ?KB

Servers 40

Servers Cache Database Media 40

SQL Server According to Bob

DECEMBER 18, 2018

Durability: “In database systems , durability is the ACID property which guarantees transactions that have committed will survive permanently. Microsoft SQL Server Database Engine Input/Output Requirements. CSA ISO/IEC 9945-1:2005 (R2009) 3.375 Synchronized I/O Data Integrity Completion. The Back Story. File Integrity Standard.

Servers 90

Servers Media Cache Storage 90