Percona

JULY 5, 2023

Now, the first issue with the logical dump restore approach, as somewhat totally expected though, is with system tables. You cannot load a dump of the MySQL system database from MySQL 8.0 Therefore, you must dump user tables only while getting the system tables from the last backup before the upgrade. and restore to 5.7

C++ 114

C++ Database Servers Testing 114

SQL Performance

MAY 13, 2020

A persistent base table is either a regular persistent base table or a system-versioned table. Here's the standard's definition for derived tables in the general sense: 4.15.3 There are three main parts to identify in a statement involving a derived table definition: The table expression (the inner query). Derived tables.

C++ 143

C++ Code Design Servers 143

SQL Performance

JULY 13, 2022

L0 AS ( SELECT 1 AS c. But what if you require a deterministic definition of the frame with guaranteed repeatable results? To test the performance of the solutions, you’ll need a larger set of sample data. Orders WITH ( TABLOCK ) ( orderid , orderdate , empid , custid , qty ) SELECT N.

C++ 112

C++ Code Azure Database 112

Percona

OCTOBER 17, 2023

Many changes and new features are brought to the system, and as part of keeping in tune with the changes and how they can impact us, we go through the changes to better understand them. The dynamic allocation might have flaws, but it’s definitely a good addition. From that, this article is born.

Metrics 98

Metrics C++ Storage Database 98

DZone

NOVEMBER 9, 2021

nn> MonitoringnnWe (humans) are terrible at imagining all possible permutations of the system with billions and billions of possible states. You may think that you know how the system works. You may think that you know how the system works. In the best case, you know only how the system was designed to work.

Software 245

Software Software Code Energy 245

Scalegrid

FEBRUARY 15, 2024

MongoDB® SSL with Self-Signed Certificates in C# Configuring MongoDB Server for SSL/TLS Encryption Once your certificates are ready, the next step is configuring the MongoDB server for SSL/TLS encryption, allowing you to securely connect to MongoDB. While we’re yet to run comprehensive tests, there is definite overhead due to using SSL.

Servers 130

Servers Best Practices Government Network 130

Dynatrace

NOVEMBER 8, 2021

Organizations use APM to ensure system availability, optimize service performance and response times, and improve user experiences. G2 Research includes a clear definition of APM in its Grid Report for Application Performance Monitoring for Spring 2021. ” — Christopher C, Platform Manager at an enterprise.

Artificial Intelligence 233

Artificial Intelligence Monitoring Infrastructure Cloud 233

The Morning Paper

NOVEMBER 12, 2019

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., Serval is a framework for developing automated verifiers of systems software. Prior work has demonstrated symbolic evaluation for specific systems, but Serval introduces a general purpose approach of reusable and interoperable verifiers.

Code 45

Code Systems Programming Google 45

Testsigma

APRIL 8, 2020

The test cases are defined to replicate the behaviour of the system thus the name ‘Behavior Driven Development’. Thus, whereas TDD begins with a focus on the development of unit tests by developers, BDD starts with a focus on specifying the behaviour of the system in a human-friendly format. Benefits of using BDD.

Development 96

Development Programming Testing Java 96

Adrian Cockcroft

FEBRUARY 9, 2023

The third is that the Team Topologies book defined how to create and manage Platform Teams so there’s interest in the terminology and definition. The next layer is operating system platforms, what flavor of Linux, what version of Windows etc. The second is that some companies with tools to sell are marketing the term.

Engineering 137

Engineering Serverless Lambda AWS 137

Percona

AUGUST 30, 2023

cat /usr/lib/systemd/system/postgresql-14.service. That is where all “ALTER SYSTEM SET/RESET” commands keep the information. But another database might be an OLAP system. psql "host=localhost user=postgres options='-c synchronous_commit=off'" psql (14.8) So, the setting goes as part of the function definition.

Database 99

Database Servers Open Source Tuning 99

Percona

SEPTEMBER 27, 2023

DEFAULT ‘on’::text Because we specified ‘2’ for premake in the create_parent function, you can observe that two partitions ahead have been created, as shown in the table definition below. You can set the parameter either by using ALTER SYSTEM or by manually modifying the config file.

Storage 97

Storage Open Source Database Efficiency 97

Sutter's Mill

JANUARY 11, 2021

(Note that “no side effects on normal execution” is always automatically true for violation handlers even when an assertion system such as proposed in [4] allows arbitrary custom violation handlers to be installed, because those are executed only if we discover that we’re in a corrupted state and so are already outside of normal execution. [5]

C++ 58

C++ Programming Code Testing 58

SQL Performance

AUGUST 2, 2019

The latest adaptation by the SQL Server team is moving the system tables (metadata) for tempdb to In-Memory OLTP (aka memory-optimized). I restored a copy of WideWorldImporters and then created three stored procedures (definitions below). OrderID , c. Customers c ON o. CustomerID = c. OrderID , c.

Servers 95

Servers C++ Testing Systems 95

HammerDB

FEBRUARY 25, 2021

On high-performance multi-core systems all the supported databases can return performance in the many millions of transactions per minute. For HammerDB both TPROC-C and TPROC-H run all of their workloads on the database being tested in SQL. The following is an example from TPROC-C from SQL Server. Database interfaces in C.

Programming 67

Programming Benchmarking Virtualization C++ 67

Percona

DECEMBER 14, 2022

System space is at a premium i.e. it’s worth your while to manage space utilization as much as possible. And if the query processes 100 million rows, that’s definitely not trivial! As a General Purpose Database Management System, basic behaviors can be reconfigured in Postgres for different purposes. wget [link].

Database 92

Database Analytics Storage Processing 92

Percona

OCTOBER 10, 2023

Assuming that there is already a Secrets object holding all system user passwords, the concept is really simple. Copyright (c) 2009-2023 Percona LLC and/or its affiliates Copyright (c) 2000, 2023, Oracle and/or its affiliates. Type 'c' to clear the current input statement. Type 'c' to clear the current input statement.

Database 92

Database Performance C++ Engineering 92

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] Rewrite the example in Question 1 to show how to approximate the same effect using assertions in today’s C++. This has the big benefit that it works using today’s C++.

C++ 49

C++ Code Testing Systems 49

SQL Performance

OCTOBER 1, 2020

In my last post , I showed how to use TSqlParser and TSqlFragmentVisitor to extract important information from a T-SQL script containing stored procedure definitions. a AS /* comment here because -- chaos */ int = 5 , @b AS varchar ( 64 ) = 'AS = /* BEGIN @a, int = 7 */ ' 'blat' '' , @c AS int = -- 12. Param name: @c.

C++ 57

C++ Code Database Systems 57

Percona

JUNE 7, 2023

Triggers on Data Definition Language (DDL) events are a powerful feature of PostgreSQL that allows you to perform additional actions in response to changes to the database schema. With event-based triggers, one can build more robust and automated database systems that can help improve the efficiency of the data.

Database 73

Database Best Practices Open Source C++ 73

All Things Distributed

DECEMBER 1, 2016

Amazon EC2 Systems Manager : A collection of tools for package installation, patching, resource configuration, and task automation on Amazon EC2. We also added C# support for AWS Lambda. We're excited to see how customers you will put these new features to work. *: Sean Connery is the definitive Bond.

AWS 163

AWS Development Lambda Open Source 163

SQL Performance

MARCH 11, 2020

The standard unique constraint definition is a bit different than the T-SQL version. Here's the unique constraint definition from the standard: "A unique constraint on T is satisfied if and only if there do not exist two rows R1 and R2 of T such that R1 and R2 have the same non-NULL values in the unique columns.". 5 NULL 300 D.300

C++ 135

C++ Code Servers Database 135

Nick Desaulniers

OCTOBER 24, 2018

qemu-system-x86_64. s -S & $ gdb vmlinux ( gdb ) target remote :1234 ( gdb ) hbreak start_kernel ( gdb ) c ( gdb ) lx-dmesg. qemu-system-x86_64 -kernel arch/x86_64/boot/bzImage. qemu-system-x86_64 -kernel arch/x86_64/boot/bzImage -nographic. It will seem that there’s no output, and QEMU isn’t responding to ctrl+c.

C++ 56

C++ Hardware Virtualization Systems 56

Percona

MARCH 7, 2019

It’s important to understand where the CPU time is being consumed: user space, system space, iowait, and so on. There could be more, but this particular query was definitely hurting the performance of the server. c) From there you can divert into the areas that are related to that resource and start to narrow down the issue.

C++ 98

C++ Traffic Servers Monitoring 98

Sutter's Mill

MARCH 25, 2021

But if the sight of these function signatures has had you pulling your hair and shouting “use the type system, Luke!” c) just using post-C++20 contract preconditions (not yet valid C++, but something like the syntax in [2]) Preconditions test values, so they can let us eliminate the “wrong values” kinds of mistakes.

C++ 45

C++ Design Code Systems 45

SQL Performance

MAY 12, 2021

And here’s the code with the function’s definition: CREATE OR ALTER FUNCTION dbo. Here’s the CLR code used in Kamil’s first solution to define a function called GetNums_KamilKosno1: using System ; using System.Data.SqlTypes ; using System.Collections ; public partial class GetNumsKamil1 { [ Microsoft. SqlTypes ; using System.

C++ 111

C++ Servers Database Code 111

Testsigma

FEBRUARY 3, 2021

Mobiles have different models, screen resolutions, operating systems, network types, hardware configurations, etc. Integration Testing – Integration and working of different systems together are tested using integration testing. End-to-End testing – Testing of the whole system together is performed using end-to-end testing.

Mobile 82

Mobile Testing Hardware C++ 82

Randon ASCII

OCTOBER 4, 2020

First, a bit of operating-system design context. Ideally the CPU goes to sleep when Sleep(1) is called, in order to save power, so how does the operating system (OS) wake your thread if the CPU is sleeping? If multiple threads can synchronize or coalesce their timer waits then the system becomes more power efficient.

Programming 145

Programming Games Hardware Operating System 145

Testsigma

AUGUST 28, 2021

Thus, when you automate those test cases and then execute them as cross-browser and cross-device test cases, maintenance would, definitely, not be a headache. You are testing on real devices, and on the devices your customers use – but you don’t have access to all the versions of operating systems and browsers they might be using.

Testing 75

Testing Cloud C++ Operating System 75

Sutter's Mill

FEBRUARY 8, 2021

2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] 2] Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for postconditions. [1] How can we approximate those advantages?

C++ 45

C++ Lambda Efficiency Code 45

Randon ASCII

JANUARY 22, 2017

In this episode I’ll show how deleting an inline function definition can lead to similar savings. In August of 2016 Chrome switched meta-build systems, from gyp to gn. Both gyp and gn are systems for creating ninja files and these are the files that define how Chrome is built.

C++ 56

C++ Code Systems Processing 56

Smashing Magazine

AUGUST 9, 2019

One way this can be achieved is through the use of methodologies such as Object-Oriented CSS (OOCSS), which rather than organizing CSS around page context, encourages separating structure (grid systems, spacing, widths, etc.) c-button { // styles et al } // any other class declarations }. from decoration (fonts, brand, colors, etc.).

Performance 94

Performance C++ Media Website 94

Sutter's Mill

JANUARY 25, 2021

In the post-C++20 contracts proposal at [3], this is partly captured by the proposed basic levels of default , audit , and axiom , roughly intended to represent “cheap,” “expensive,” and “impossible” respectively. P0542: Support for contract based programming in C++” (WG21 paper, June 2018). Dos Reis, J. Meredith, N. Myers, and B.

C++ 45

C++ Programming Cache Testing 45

SQL Performance

JUNE 10, 2020

Unlike the conceptual treatment of the data which is based on a mathematical model and a standard language, and hence is very similar in the various relational database management systems out there, the physical treatment of the data is not based on any standard, and hence tends to be very platform-specific. custid = C. custid , C.

C++ 109

C++ Database Servers Code 109

SQL Performance

APRIL 8, 2020

It occurred to me that both the naming confusion, and the confusion around whether there's a persistency aspect to table expressions, can be cleared with a better understanding of the fundamentals of our field of relational database management systems. When I read C. As mentioned earlier, I use the term table expression following C.

C++ 143

C++ Azure Database Servers 143

ScaleOut Software

JULY 14, 2021

Azure Digital Twins for creating a graphical representation of the assets within an organization using the Digital Twin Definition Language, processing events, and visualizing entity graphs to display and query status. A health tracking device might indicate a combination of signals (blood pressure, blood oxygen, heart rate, etc.)

IoT 52

IoT Azure Analytics Serverless 52

Nick Desaulniers

APRIL 6, 2020

asm goto is a GNU C extension that allows for assembly code to transfer control flow to a limited, known set of labels in C code. With asm goto , we have something more akin to structured exception handling in C++; we’re going to “call” something, and it may jump control flow to an arbitrary location.

C++ 67

C++ Hardware Code Virtualization 67