SQL Performance

JULY 13, 2022

This could also happen if you need to migrate code written for another database platform with a different dialect of SQL to T-SQL. Use the following code to create the Orders table and populate it with a small set of sample data to help you verify the validity of the solutions: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo.

C++ 112

C++ Code Azure Database 112

Dynatrace

NOVEMBER 8, 2021

G2 Research includes a clear definition of APM in its Grid Report for Application Performance Monitoring for Spring 2021. These solutions provide performance metrics for applications, with specific insights into the statistics, such as the number of transactions processed by the application or the response time to process such transactions.

Artificial Intelligence 232

Artificial Intelligence Monitoring Infrastructure Cloud 232

SQL Performance

APRIL 13, 2022

Use the following code to create a table called T1 and populate it with a small set of sample data: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo. Note the definition of the primary key constraint based on the composite key (grp, ord), which results in a clustered index based on the same key. L0 AS ( SELECT 1 AS c.

C++ 136

C++ Strategy Testing Servers 136

SQL Performance

DECEMBER 9, 2020

I mainly experimented with different table value constructor cardinalities, with serial versus parallel processing, and with row mode versus batch mode processing. Use the following code to run a test with base CTE cardinality of 2 (requires 5 additional levels of CTEs): DECLARE @low AS BIGINT = 1 , @high AS BIGINT = 100000000 ; WITH.

C++ 61

C++ Servers Testing Processing 61

SQL Performance

MAY 11, 2022

Naturally, if a partitioning or ordering element doesn’t appear in the window function, you omit that part from the index definition. These can result in different parts of the plan needing to process the input data in different orders. You can download the source code to create and populate this database here.

C++ 133

C++ Database Servers Code 133

Smashing Magazine

NOVEMBER 26, 2021

However, there are a few ways in which you can make a large code-base easy to maintain. In certain cases, the build will fail if there are type mismatches in your code as Next.js checks for type definition during build time. We recommend using code editor type checking during development.”. applications. From the Next.js

Cache 144

Cache Code Testing Design 144

The Morning Paper

NOVEMBER 12, 2019

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., The port and verification processes took about four-person weeks each (impressively little time, but remember these are world-experts in verification methods doing the work!). SOSP’19. When it comes to branches etc.,

Code 45

Code Systems Programming Google 45

The Netflix TechBlog

MARCH 2, 2021

I started working at a local payment processing company after graduation, where I built survival models to calculate lifetime value and experimented with them on our brand new big data stack. David Cameron (Studio Production) [David C.] My academic credentials definitely helped on the technical side.

Analytics 207

Analytics C++ Innovation Engineering 207

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? Well, I’m oversimplifying a bit.

C++ 109

C++ Database Servers Code 109

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? Well, I’m oversimplifying a bit.

C++ 93

C++ Database Servers Code 93

Randon ASCII

MARCH 30, 2020

I did my tests on an October 2019 version of Chromium’s code because that gave me the most flexibility about which build options to use. The graph below shows the relationship between the number of lines of code in source files and how long it took to compile them. million lines of source code in the primary source files.

C++ 87

C++ Code Open Source Programming 87

Particular Software

AUGUST 30, 2021

Do you hate boilerplate code? Have you heard of C# source generators 1 and thought they sounded pretty cool but didn’t really know how they could be useful? Now, this code is all it takes to write transactionally consistent NServiceBus handlers inside of your Azure Function project. Do you think Azure Functions are pretty great?

Azure 52

Azure Transportation C++ Code 52

All Things Distributed

DECEMBER 1, 2016

AWS Codebuild : A new, fully managed, extensible service for compiling source code and running unit tests, which is integrated with other application lifecycle management services— such as AWS CodeDeploy, AWS CodeCommit, and AWS CodePipeline— for dramatically decreasing the time between iterations of software.

AWS 162

AWS Development Lambda Open Source 162

The Morning Paper

MAY 16, 2019

bugs you do let slip into your code. The six applications studied were Docker, Kubernetes, etcd, CockroachDB, gRPC, and BoltDB, so that’s a lot of important real-world Go-code right there. An especially interesting comparison can be made in the case of gRPC, which has both a C implementation and a Go implementation.

Programming 100

Programming C++ Design Code 100

Randon ASCII

JANUARY 22, 2017

In this episode I’ll show how deleting an inline function definition can lead to similar savings. The savings this time are less important as they are mostly in the.BSS segment, but there are also some modest code-size savings, and some interesting lessons. This was a painful process. Are you sure?

C++ 56

C++ Code Systems Processing 56

Alex Podelko

OCTOBER 28, 2016

While protocol-level recording/playback was (and still is) the mainstream approach to testing applications, it is definitely just one type of load testing using only one type of load generation; such equivalency is a serious conceptual mistake, dwarfing load testing and undermining performance engineering in general. LoadRunner) or Java (e.g.

Performance Testing 100

Performance Testing Technology Technology Testing 100

The Agile Manager

AUGUST 31, 2021

If we accept the fact that Agile is a value system and not a set of mechanical processes, it stands to reason that there must be something different about the norms and behaviors of Agile managers vis-a-vis traditional managers. The best Agile managers are outstanding at scope definition and scope control.

Metrics 52

Metrics Design Engineering C++ 52

SQL Performance

AUGUST 12, 2020

What’s different about the design of CTEs compared to derived tables is where in the code these three elements are located. However, there are very few cases in T-SQL where without a terminator the code is ambiguous. The elements are sort of intertwined. In those cases, the termination is mandatory. Incorrect syntax near 'UC'.

C++ 140

C++ Code Design Database 140

Nick Desaulniers

OCTOBER 24, 2018

s -S & $ gdb vmlinux ( gdb ) target remote :1234 ( gdb ) hbreak start_kernel ( gdb ) c ( gdb ) lx-dmesg. It will seem that there’s no output, and QEMU isn’t responding to ctrl+c. Try ctrl+a , then c , to get a (qemu) prompt. Well at least we’re no longer in the dark (remember, ctrl+a , c , q to exit). enable-kvm.

C++ 56

C++ Hardware Virtualization Systems 56

J. Paul Reed

JANUARY 24, 2017

One of the pieces of lint the DevOps community loves to navel-gaze at the most is the “definition of DevOps.” To address that, a definition, optimally an unimpeachable one, must be codified. We’ve raised an entire generation of engineers who are used to writing interpreted code, and may have never actually compiled anything.

DevOps 40

DevOps Engineering IoT C++ 40

The Morning Paper

OCTOBER 29, 2019

Today we’re taking a closer look at CORELS, the C ertifiably O ptimal R ul E L ist S algorithm that we encountered in Rudin’s arguments for interpretable models earlier this week. ” Instead of finding a good-enough rule list, we have to find the best rule list (for some definition of best, which we’ll get to in a moment).

C++ 45

C++ Design Testing Code 45

Nick Desaulniers

MAY 25, 2015

The other programs that might be compiled are C, C++, and to some extent Java and C#. Taking the time to do translation to native machine code ahead of time can result in better performance at runtime, but an interpreter can get to work right away without spending any time translating.

C++ 73

C++ Programming Code Architecture 73

O'Reilly

JANUARY 9, 2024

Kevlin Henney and I recently discussed whether automated code generation, using some future version of GitHub Copilot or the like, could ever replace higher-level languages. As coding assistants become more accurate, it seems likely to assume that they will eventually stop being “assistants” and take over the job of writing code.

Programming 116

Programming C++ Code Operating System 116

KeyCDN

OCTOBER 17, 2019

AV1 is the royalty-free video coding format that has most tech experts believing it is the next step in media compression. High Dynamic Range is also known as HDR and wide color gamut is akin to what people now call “Ultra High Definition” photos and videos.

Media 43

Media Internet Internet Speed 43

SQL Performance

FEBRUARY 10, 2021

I’ll do my testing in tempdb, enabling IO and TIME statistics: SET NOCOUNT ON ; USE tempdb ; SET STATISTICS IO , TIME ON ; The fastest solution from last month applies a join with a dummy table that has a columnstore index to get batch processing. Here’s the code to create the dummy table: DROP TABLE IF EXISTS dbo. BatchMe ; GO.

C++ 124

C++ Servers Testing Code 124

SQL Performance

NOVEMBER 11, 2020

But there’s another important aspect of CTE optimization, or physical processing, to consider beyond the solution’s performance—how multiple references to the CTE from an outer query are handled. WITH C AS ( SELECT SYSDATETIME ( ) AS dt ) SELECT @i += 1 FROM C WHERE dt = dt ; PRINT @i ; GO. -- Batch 3.

C++ 122

C++ Code Storage Processing 122

The Symphonia

DECEMBER 7, 2018

Ruby, C++, and Rust are now Lambda languages directly supported by AWS. This is definitely an interesting new path, and allows, obviously, for use of languages in Lambda beyond those supported by AWS. These artifacts are shared across functions, and so allow for code and data sharing. this is now available.

Lambda 40

Lambda Serverless AWS Blockchain 40

O'Reilly

APRIL 25, 2023

But what’s also clear is that the process of programming doesn’t become “ChatGPT, please build me an enterprise application to sell shoes.” In this post, Fowler describes the process Xu Hao (Thoughtworks’ Head of Technology for China) used to build part of an enterprise application with ChatGPT. That excitement is merited.

Programming 132

Programming Architecture Strategy Code 132

Percona

AUGUST 30, 2023

If a PostgreSQL user wants to change these values, they need to recompile the PostgreSQL from the source code. A change to such parameters requires the postmaster — the main process of the PostgreSQL — to restart. psql "host=localhost user=postgres options='-c synchronous_commit=off'" psql (14.8)

Database 97

Database Servers Open Source Tuning 97

Percona

OCTOBER 17, 2023

The dynamic allocation might have flaws, but it’s definitely a good addition. That’s very welcome after upgrade/downgrade processes when metadata is touched after FCV change. In previous releases, the downgrade process was relatively simple: Have a valid backup. Remove backward-incompatible features.

Metrics 96

Metrics C++ Storage Database 96

Testsigma

FEBRUARY 3, 2021

Unit Testing – Developers execute unit tests for the smallest unit of code, whenever they commit new code in the code repository. It provides thousands of environments which are ready to use without any setup and coding knowledge. Reference: [link]. Functional testing for mobile applications can be performed by-.

Mobile 82

Mobile Testing Hardware C++ 82

Testsigma

APRIL 8, 2020

BDD is a software development process that is driven by the behaviour of an application and is sometimes called as an extension of the Test Driven Development (TDD) approach. Then the code can be refactored to improve its quality. Below figure from depicts the process followed by TDD. Behavior Driven Development(BDD).

Development 96

Development Programming Testing Java 96

SQL Performance

APRIL 14, 2021

Evaluating earlier solutions, one of the important factors in getting good performance was the ability to employ batch processing. Let’s examine the plans for two of the earlier solutions that utilized batch processing. Here’s the function’s definition: -- Helper dummy table. CREATE OR ALTER FUNCTION dbo.

C++ 112

C++ Servers Testing Code 112

Randon ASCII

OCTOBER 4, 2020

The short version is that calls to timeBeginPeriod from one process now affect other processes less than they used to, but there is still an effect. Let’s imagine that Process A is sitting in a loop calling Sleep(1). Then Process B comes along and calls timeBeginPeriod(2). It’s fifteen lines of code. That’s crazy!

Programming 145

Programming Games Hardware Operating System 145

SQL Performance

MAY 12, 2021

Use the following code to create the database if it doesn’t exist, and to enable I/O and time statistics: -- DB and stats. For simplicity’s sake, I’ll disable CLR strict security and make the database trustworthy using the following code: -- Enable CLR, disable CLR strict security and make db trustworthy. USE testdb ; GO.

C++ 111

C++ Servers Database Code 111

ScaleOut Software

JULY 14, 2021

The Microsoft Azure IoT ecosystem offers a rich set of capabilities for processing IoT telemetry, from its arrival in the cloud through its storage in databases and data lakes. Acting as a switchboard for incoming and outgoing messages, Azure IoT Hub forms the core of these capabilities.

IoT 52

IoT Azure Analytics Serverless 52

SQL Performance

APRIL 8, 2020

When I read C. I do recognize and firmly believe that a good understanding of relational theory translates directly to a better understanding of SQL and T-SQL, and to writing better, more accurate, and more robust T-SQL code. They're not supposed to worry about how the data is structured, accessed and processed.

C++ 143

C++ Database Azure Servers 143