Dynatrace

MAY 2, 2024

At this year’s RSA conference, taking place in San Francisco from May 6-9, presenters will explore ideas such as redefining security in the age of AI. blog Generative AI is an artificial intelligence model that can generate new content—text, images, audio, code—based on existing data. ’ and ‘How compliant are we?

Artificial Intelligence 238

Artificial Intelligence Cloud Best Practices DevOps 238

Sutter's Mill

FEBRUARY 12, 2024

I generally give one or two courses a year on C++ and related technologies. Presented by Alfasoft. But we are polyglots, after all… so don’t be overly shocked that I may sometimes show a few code examples in other popular languages, if only for comparison and to show how the other half lives.

C++ 40

C++ Latency Code Technology 40

Scalegrid

FEBRUARY 15, 2024

Once you’ve crafted this foundation, a Certificate Signing Request (CSR) emerges, which you’ll present to the certificate authority, much like a knight presenting a decree to a king. The CA, in turn, grants you a valid certificate, a seal of trust that assures clients your server is legitimate. For versions of the shell before 4.2,

Servers 130

Servers Best Practices Government Network 130

Percona

JULY 19, 2023

Well, “easy” if you know just a tiny bit of C++. Our function will implement a ULID generator using a C++ library from ChrisBove/ulid. Creating the build environment The first step is downloading the source code to MySQL / Percona Server for MySQL 8.0.32 , then extracting the tarball. $ cd ~/percona-server-8.0.32-24/plugin/ulid/

C++ 81

C++ Servers Benchmarking Best Practices 81

Sutter's Mill

MAY 1, 2023

Simple, mathematically safe, and efficient chained comparisons ( commit ) P0515 “Consistent comparison” (aka “spaceship”) was the first feature derived from this Cpp2 work to be adopted into the ISO Standard for C++, in C++20. Thank you again to everyone who helped land this Cpp2 feature in the ISO C++ Standard.

C++ 97

C++ Virtualization Lambda Code 97

Sutter's Mill

FEBRUARY 13, 2017

I don’t get to Europe very often apart from ISO C++ standards meetings, but this spring I’ve been able to accept invitations for two English-language European events in the last week of April. Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). Description.

Latency 51

Latency C++ Hardware Performance 51

Dynatrace

AUGUST 7, 2023

Developers use generative AI to find errors in code and automatically document their code. They can also use generative AI for cybersecurity, write prototype code, and implement complex software systems. Visit our booth, number #2608, at Black Hat and c heck out our guide below. Here’s what you need to know.

DevOps 194

DevOps Analytics Best Practices Java 194

SQL Performance

APRIL 13, 2022

I’ll start by presenting a generalized form of the challenge. I’ll present a generalized form of Erland’s original islands challenge. I’ll present a generalized form of Erland’s original islands challenge. Use the following code to create the helper function GetNums: CREATE FUNCTION dbo. L0 AS ( SELECT 1 AS c.

C++ 136

C++ Strategy Testing Servers 136

SQL Performance

SEPTEMBER 9, 2020

Use the following code to create and populate the Employees table in the tempdb database: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo. Another option is to use imperative iterative code, but such solutions tend to be lengthy. FROM C AS M INNER JOIN dbo. FROM C AS M INNER JOIN dbo. FROM C AS M INNER JOIN dbo.

C++ 143

C++ Code Servers Availability 143

HammerDB

MAY 26, 2022

You may want to become familiar with all the underlying source code in C or wish to build a distribution where you can verify every single line of source code that goes into HammerDB. set MARIADB_CONFIG=C:Program FilesMariaDBMariaDB Connector C 64-bit set MYSQL_CONFIG=C:Program FilesMySQLMySQL Server 8.0 linux-glibc2.12-x86_64/bin

C++ 113

C++ Database Open Source Servers 113

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

SQL Performance

DECEMBER 8, 2021

This month, I'll present the challenge and the classic cursor-based solution. In subsequent articles, I'll present set-based solutions—including the ones Peter and I worked on. The challenge involves querying a table called Auctions, which you create using the following code: DROP TABLE IF EXISTS dbo. L0 AS ( SELECT 1 AS c.

C++ 133

C++ Code Benchmarking Performance 133

Percona

APRIL 21, 2023

The major problem it causes during a planned change in a MySQL replication topology is that the transaction is not present in the binlog and hence cannot be sent over to the replica, which causes a replication error. root@monitor ~]# orchestrator-client -c topology-tabulated -alias testcluster | tr '|' 't' 192.168.56.10:3306

C++ 84

C++ Monitoring Database Open Source 84

Sutter's Mill

SEPTEMBER 25, 2022

[Edited to add pre-publication link to next draft of P2392, revision 2, and correct iterator comparison] Brief background As I presented at CppCon 2021 starting at 11:15 , I’m proposing is (a general type or value query) and as (a general cast, for only the safe casts) for C++ evolution. in requires clauses, in general code).

C++ 96

C++ Testing Code Systems 96

Percona

JUNE 20, 2023

In order to understand “segmentation fault,” it is a must to know the basic idea of segmentation and its implementation in C programming. Here, memory is divided into equal sizes of partitions where the code of a program resides. ” Below is a line of code that results in a segmentation fault on PostgreSQL 13.4

Programming 84

Programming C++ Database Virtualization 84

SQL Performance

MAY 11, 2022

Similarly, what if other elements in the query besides window functions also require arranging input data as ordered in the plan, such as a presentation ORDER BY clause? You can download the source code to create and populate this database here. But what about queries involving multiple window functions with different ordering needs?

C++ 133

C++ Database Servers Code 133

Dynatrace

DECEMBER 8, 2020

Teams are embracing new technologies and continuously deploying code. In addition, c loud – native environments with containers, microservices, and platforms like Kubernetes are highly dynamic. Dynatrace provides the C-suite with confidence about the security of their cloud-native ecosystem.

Cloud 296

Cloud Open Source Internet Internet 296

SQL Performance

FEBRUARY 12, 2020

According to the standard, you would use the following code with the DISTINCT predicate to handle this need: SELECT orderid , shippeddate FROM Sales. According to the standard, you would use the following code to handle such a join: SELECT T1. INNER JOIN dbo. k1 IS NOT DISTINCT FROM T2. k2 IS NOT DISTINCT FROM T2. CREATE TABLE dbo.

C++ 120

C++ Code Servers Database 120

SQL Performance

MAY 13, 2020

I just wanted to mention some use cases here to illustrate how important table expressions are in our T-SQL code, and why it's worthwhile to invest in understanding their fundamentals well. However, from relational theory's standpoint, there's a deeper meaning to what C represents. C is what's known as a range variable.

C++ 143

C++ Code Design Servers 143

SQL Performance

DECEMBER 9, 2020

I’ll present the performance tests that I’ve done with my solution. 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. Testing different base table cardinalities is just one dimension to try.

C++ 114

C++ Servers Testing Processing 114

SQL Performance

JANUARY 13, 2021

Here’s the code to create the dummy table: CREATE TABLE dbo. BatchMe ( col1 INT NOT NULL , INDEX idx_cs CLUSTERED COLUMNSTORE ) ; And here’s the code defining the dbo.GetNumsItzikBatch function: CREATE OR ALTER FUNCTION dbo. L0 AS ( SELECT 1 AS c. L0 AS ( SELECT 1 AS c. BatchMe ON 1 = 0.

C++ 113

C++ Code Testing Processing 113

Sutter's Mill

SEPTEMBER 24, 2019

Yesterday, I received this question from a distinguished C++ expert who served on the ISO C++ committee for many years. The email poses a decades-old question that still has the classic roll-your-own answer in C++ Core Guidelines #C.130 macros ), C++11/14/17 features (e.g., decltype ), draft C++20 features (e.g.,

C++ 73

C++ Code 73

SQL Performance

FEBRUARY 10, 2021

Here’s the code to create the dummy table: DROP TABLE IF EXISTS dbo. BatchMe ( col1 INT NOT NULL , INDEX idx_cs CLUSTERED COLUMNSTORE ) ; And here’s the code with the definition of the dbo.GetNumsAlanCharlieItzikBatch function: CREATE OR ALTER FUNCTION dbo. Before I present new solutions, I just wanted to cover a small tip.

C++ 124

C++ Servers Testing Code 124

SQL Performance

MARCH 9, 2022

Auctions ( Code , ID ) INCLUDE ( Quantity ) ; -- Enable batch-mode Window Aggregate. Auctions ( ID ) WHERE ID = - 1 AND ID = - 2 ; When describing the logic behind the solutions, I’ll assume the Auctions table is populated with the following small set of sample data: ID Code Quantity -- -. Code = 'D'. )

C++ 138

C++ Code Efficiency Performance 138

SQL Performance

MARCH 10, 2021

Here’s the code to create the dummy table: DROP TABLE IF EXISTS dbo. BatchMe ( col1 INT NOT NULL , INDEX idx_cs CLUSTERED COLUMNSTORE ) ; And here’s the code with the definition of the dbo.GetNumsAlanCharlieItzikBatch function: CREATE OR ALTER FUNCTION dbo. BatchMe ; GO. CREATE TABLE dbo. BatchMe ON 1 = 0. and dbo.T3

C++ 134

C++ Testing Code Servers 134

HammerDB

JULY 6, 2023

In this example, we will use the CLI to run TPROC-C on a MariaDB database to illustrate the concepts. Copy Code Copied Use a different Browser diset tpcc maria_keyandthink true When we run the test, we can see that our virtual user ran transactions at 1 NOPM (new order per minute) with most of the time now spent in keying and thinking time.

Virtualization 57

Virtualization C++ Database Code 57

Adrian Cockcroft

JANUARY 29, 2023

I presented this analysis of response time distributions talk in 2016 — at Microxchg in Berlin ( video ). The code is written using the R statistics language and I downloaded a free copy of RStudio to run the examples below. > > system.time(wait1 <- normalmixEM(waiting, mu=c(50,80), lambda=.5,

Lambda 98

Lambda Latency Cache C++ 98

SQL Performance

MAY 8, 2019

Run the following code to create a helper function called GetNums, and to create and populate the Customers and Orders tables: SET NOCOUNT ON ; USE tempdb ; GO. GetNums ( 1 , 100 ) AS C WHERE C. However, the code uses custid in both the outer and inner queries. Substitution error. DROP TABLE IF EXISTS dbo.

Best Practices 68

Best Practices C++ Code Servers 68

Percona

JUNE 4, 2023

Disadvantages: While MariaDB is a popular and widely-used RDBMS, it can present some disadvantages to users that may not be present in others. now a release candidate) SQL – Window Functions Present in MariaDB Server 10.2 now a release candidate) SQL – Window Functions Present in MariaDB Server 10.2

Open Source 52

Open Source Servers Storage Scalability 52

Adrian Cockcroft

FEBRUARY 9, 2023

We wanted AWS to grow its platform functionality, and to continually eat away at the bottom of the thin layer of rapidly evolving Netflix specific platform code that we had built. I was thinking about drawing a layer cake diagram to show this but decided to put it on a Wardley Map instead (created using mapkeep.com).

Engineering 137

Engineering Serverless Lambda AWS 137

Sutter's Mill

FEBRUARY 23, 2020

This post is an attempt to shed light on this situation, and perhaps reduce some of the time spent on unresolved ongoing design debates in the C++ community. References What references are and how to use them In C++, a C& or C&& reference is an indirect way to refer to an existing object. That’s it.

C++ 75

C++ Lambda Games Design 75

SQL Performance

JULY 1, 2021

When you're automating an index maintenance solution or deploying new compression settings across your environment, it is a bit more of a pain in the behind to make your solution handle present or future state. name , [ Column ] = c. name , [ Data Type ] = TYPE_NAME ( c. name , [ Column ] = c.

C++ 58

C++ Database Servers Performance 58

Sutter's Mill

FEBRUARY 25, 2021

Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for preconditions. [1] GUIDELINE: Use a precondition to write “this is what a bug is” as code the caller can check. A precondition states in code the circumstances under which this function’s behavior is not documented.

C++ 49

C++ Code Testing Systems 49

SQL Performance

DECEMBER 9, 2020

I’ll present the performance tests that I’ve done with my solution. 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. Testing different base table cardinalities is just one dimension to try.

C++ 61

C++ Servers Testing Processing 61

Brendan Gregg

SEPTEMBER 25, 2021

The broken Java stacks turned out to be beneficial: They helped group together the os::javaTimeMillis() calls which otherwise might have have been scattered on top of different Java code paths, appearing as thin stacks everywhere. Without NMI, some kernel code paths (interrupts disabled) can't be profiled. But I'm not completely sure.

Speed 126

Speed Java AWS Virtualization 126

Sutter's Mill

AUGUST 13, 2023

Thanks again to C++ Now for inviting me to speak this year in glorious Aspen, Colorado, USA! The talk I gave there was just posted on YouTube, you can find it here: At CppCon 2022, I argued for why we should try to make C++ 10x simpler and safer , and I presented my own incomplete experimental compiler, cppfront.

C++ 89

C++ Efficiency Design Virtualization 89

Sutter's Mill

MAY 28, 2012

It’s time for, not one, but two brand-new, up-to-date talks on the state of the art of concurrency and parallelism in C++. I’m going to put them together especially and only for C++ and Beyond 2012 , and I’ll be giving them nowhere else this year: C++ Concurrency – 2012 State of the Art (and Standard). And there’s a lot to tell.

C++ 40

C++ Hardware Best Practices Tuning 40