Percona

JUNE 29, 2023

Before Percona Server for MongoDB 4.4 PSMDB), the best practice to create an index was doing it in a rolling manner. Many folks used to create directly on Primary, resulting in the first index being created successfully on Primary and then replicated to Secondary nodes. Starting from PSMDB 4.4, internal", "port" : 27017, "version" : "4.4.22-21",

Servers 79

Servers C++ Storage Best Practices 79

Percona

DECEMBER 15, 2023

A database role can have a number of attributes that define its privileges and interact with the client authentication system.One such attribute is the CREATEROLE attribute, which is important to PostgreSQL database management of users and roles.

C++ 92

C++ Database Open Source Systems 92

Percona

JUNE 15, 2023

Sometimes we might need to install/upgrade Percona Server for MySQL /MySQL 8 to a particular version in a test or production environment. Install Percona Server for MySQL 8 specific version packages via repository. Download specific Percona Server for MySQL 8 tarball packages and install them manually. bullseye amd64 1.7

Servers 83

Servers C++ Database Systems 83

Percona

MARCH 13, 2023

to MySQL 8, we could choose to do an in-place upgrade or set up another MySQL 8 server(s) from the existing running MySQL 5.7 server with Percona XtraBackup. In my lab, we have two test nodes: PRIMARY: mysql57 (192.168.56.111) with Percona Server 5.7 server instances are ready for an upgrade. On primary server mysql5.7,

Servers 103

Servers C++ Storage Systems 103

Percona

SEPTEMBER 29, 2023

This is a global and dynamic variable, and we can set this mode when the server is running. sec) If you try to connect the DB with app_user when offline_mode=1 , it will not allow the connections and get an error message that the server is currently in offline mode. But by using this mode, we can avoid the new connections.

C++ 94

C++ Servers Open Source Database 94

Percona

OCTOBER 10, 2023

Your MySQL connection id is 256 Server version: 8.0.32-24.2 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. mysql> create database if not exists atsaloux; Query OK, 1 row affected (0.02

Database 94

Database Performance C++ Engineering 94

Percona

APRIL 3, 2023

SET WITHOUT OIDS; A list of tables with the problem is in the file: tables_with_oids.txt Failure, exiting postgres@xx.xx.xx.xx:~$ more tables_with_oids.txt In database: abs_test public.craft public.ports In database: postgres public.oid_test We can use the below SQL to find tables with OID, and it also generates the DDL to remove.

C++ 101

C++ Database Cache Storage 101

Percona

MAY 2, 2023

That’s why it’s essential to implement the best practices and strategies for MongoDB database backups. Why are MongoDB database backups important? Regular database backups are essential to protect against data loss caused by system failures, human errors, natural disasters, or cyber-attacks.

Best Practices 52

Best Practices Database Storage Servers 52

Percona

MARCH 8, 2023

Over the years of being a DBA, I had to deal with all kinds of problems in the database. Still, the users keep falling into this trap, maybe because of a poorly configured database, a change in the application components, or just because of a sudden increase of connections in the application. A lot has been written about this error.

C++ 93

C++ Database Servers Open Source 93

HammerDB

MAY 26, 2022

If you are not already familiar with the programming languages that HammerDB uses, then this earlier post serves as an ideal introduction to what makes up the highest performing GIL free database benchmarking application. The database installation must include both the include and lib directories. linux-glibc2.12-x86_64/bin.

C++ 113

C++ Database Open Source Servers 113

Percona

JUNE 4, 2023

In this blog, we’ll provide a comparison between MariaDB vs. MySQL (including Percona Server for MySQL ). Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process. What is MariaDB?

Open Source 52

Open Source Servers Storage Scalability 52

Percona

SEPTEMBER 19, 2023

This type of backup is suitable for large, important databases that need to be recovered quickly when problems occur. Physical backups are the backups that consist of raw copies of the directories and files that store database contents. Copyright (c) 2016, 2023, Oracle and/or its affiliates.

C++ 104

C++ Servers Storage Speed 104

Percona

OCTOBER 3, 2023

While THP can be beneficial for many applications, enabling it on a database server could have unintended consequences. In this post, we will explore THP, its impact on database servers, and how to disable it for optimal performance and stability. What are Transparent Huge Pages? In this case, THP is enabled.

Database 87

Database Servers Open Source C++ 87

HammerDB

DECEMBER 5, 2020

compared to previous releases is that the workload names have changed from TPC-C and TPC-H to TPROC-C and TPROC-H respectively and therefore a key question is how are the v4.0 The simple answer is nothing, the workloads are exactly the same workloads derived from the TPC-C and TPC-H specifications and HammerDB v4.0

C++ 40

C++ Benchmarking Virtualization Open Source 40

Percona

MAY 1, 2023

It has default settings for all of the database parameters. It is primarily the responsibility of the database administrator or developer to tune PostgreSQL according to their system’s workload. The performance of a PostgreSQL database has a significant impact on the overall effectiveness of an application.

Tuning 52

Tuning Efficiency Database Performance 52

Percona

DECEMBER 29, 2022

While working as a DBA, we perform many regular tasks, and one of them is upgrading our database systems. There are some techniques to perform a PostgreSQL database upgrade, such as data dump and import, logical replication, or in-site upgrade using pg_upgrade. for lib in $(psql -qtA pgbench -c"select extname||'.so'

C++ 82

C++ Open Source Database Programming 82

Percona

JUNE 26, 2023

We have faced different levels of corruption related to databases in PostgreSQL. In case of hardware failure, first, we need to fix the hardware issue or migrate our database to new hardware and then perform a restore, as mentioned below.

Hardware 74

Hardware C++ Database Open Source 74

Percona

MAY 8, 2023

In simpler terms, logical replication in PostgreSQL is a way to copy data from one database to another in a more flexible and customizable manner compared to physical replication. Instead of copying the entire database, logical replication focuses on replicating changes made to individual rows or transactions. 12 Replica1 10.0.0.80

C++ 99

C++ Servers Database Open Source 99

HammerDB

JUNE 27, 2022

HammerDB is a software application for database benchmarking. It enables the user to measure database performance and make comparative judgements about database hardware and software. Databases are highly sophisticated software, and to design and run a fair benchmark workload is a complex undertaking.

Benchmarking 62

Benchmarking Open Source C++ Cache 62

Percona

JUNE 5, 2023

Sooner or later, one must address this issue; otherwise, one can suffer the consequences of handicapping your entire database infrastructure. The problem is you either don’t or can’t refactor your application servers; something, maybe, about not having enough time in the day. Note that the md5 hashed password is pgbouncer.

Database 120

Database Open Source Servers C++ 120

Scalegrid

AUGUST 30, 2019

Redis , short for Remote Dictionary Server, is a BSD-licensed, open-source in-memory key-value data structure store written in C language by Salvatore Sanfillipo and was first released on May 10, 2009. Depending on how it is configured, Redis can act like a database, a cache or a message broker.

Cache 232

Cache Ecommerce Social Media Database 232

Official Blog - World Web Technology

AUGUST 27, 2023

It is a server-side scripting language that is highly secure, open-source, and versatile. Mostly, web servers are created with PHP. In PHP, code is directly executed on the server and generates HTML to send to the client. PHP is an open-source programming language that allows businesses to use it for free.

Development 98

Development Ecommerce Open Source Website 98

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. $ Plugin compiled.

C++ 80

C++ Servers Benchmarking Best Practices 80

Percona

DECEMBER 5, 2023

Inspired by David’s insights, I embarked on a journey to explore logical replication from a different perspective – within the realm of on-premises server databases. Also, it is a helpful method for version upgrades since the target database can run on a different (minor or major) PostgreSQL version.

Database 76

Database Traffic C++ Servers 76

Percona

DECEMBER 29, 2023

Not everything can be addressed on the database side. Inadequate application-side pooling: Suboptimal application-side pooling can lead to opening a large number of connections, and they may remain open and unused, consuming valuable resources. App-Dev often demands unrestricted, uncontrolled access to the database.

Servers 80

Servers Database C++ Airlines 80

Percona

APRIL 21, 2023

Below is my current topology: [root@monitor ~]# orchestrator-client -c topology-tabulated -alias testcluster | tr '|' 't' 192.168.56.10:3306 Below is my current topology: [root@monitor ~]# orchestrator-client -c topology-tabulated -alias testcluster | tr '|' 't' 192.168.56.10:3306 3306 0s ok 5.7.41-44-log 3306 0s ok 5.7.41-44-log

C++ 83

C++ Monitoring Database Open Source 83

Dynatrace

APRIL 5, 2021

Azure is a large and growing cloud computing ecosystem that empowers its users to access databases, launch virtual servers, create websites or mobile applications, run a Kubernetes cluster, and train machine learning models, to name a few examples. The growth of Azure cloud computing. Making the best use of Azure Functions.

Azure 136

Azure Serverless IoT Lambda 136

KeyCDN

FEBRUARY 22, 2023

WebAssembly WebAssembly (often abbreviated as wasm) is a binary instruction format for a stack-based virtual machine, designed as a portable target for the compilation of high-level languages like C, C++, and Rust. Another benefit is cost savings associated with server and data center setup and maintenance.

Artificial Intelligence 111

Artificial Intelligence Development Serverless Website 111

Percona

DECEMBER 5, 2022

The need to audit who is using a database and their activities is crucial in many environments. This functionality is available in the free, open source Audit Plugin that is included in Percona Server for MySQL. The prerequisite for installing Percona’s Audit Log Plugin is to first install Percona Server for MySQL.

Open Source 68

Open Source C++ Servers Database 68

Percona

AUGUST 18, 2023

Why do you need multiple instances on the same server? Why not just create another database on the same instance? You can have a host with two or three instances configured as a delayed replica of the source server with SQL Delay of, let’s say, 24hr, 12hr, and 6/3hrs. ln -s /usr/local/Percona-Server-8.0.19-10-Linux.x86_64.ssl101/

Programming 84

Programming Servers Database Hardware 84

Percona

AUGUST 21, 2023

While trying to be as complete yet succinct as possible, I’m detailing how to enable TLS between a PostgreSQL and the OpenLDAP server. Username accounts, but not passwords, are created on the Postgres server. Both username accounts and passwords are configured on the LDAP server. 0 ldap ldapserver=127.0.0.1

C++ 70

C++ Servers Open Source Testing 70

Percona

AUGUST 30, 2023

This can be changed later using the pg_checksums utility, but that will be a painful exercise on a big database. The most common parameter used by the PostgreSQL server (postmaster) will be PGDATA, which sets the parameter data_directory. But changing this is possible only at the server startup. 20150623 (Red Hat 4.8.5-44),

Database 101

Database Servers Open Source Tuning 101

Percona

OCTOBER 2, 2023

Percona Toolkit is a collection of advanced open source command-line tools, developed and used by the Percona technical staff, that are engineered to perform a variety of MySQL, MariaDB, MongoDB, and PostgreSQL server and system tasks that are too difficult or complex to perform manually. And did I mention they are open source?!

Cache 98

Cache Database Virtualization Servers 98

Percona

NOVEMBER 9, 2023

With this data, we’ll be able to better understand and tune our Postgres servers. The main idea is to be able to easily detect what the server is doing at any point in time so we can better understand how it reacts to the workload and tune accordingly. You can search the blog for more information on this if needed.

Monitoring 90

Monitoring Tuning Metrics Servers 90

Percona

MARCH 24, 2023

You might want to use binlog compression with MySQL/ Percona Server for MySQL , but it can come with drawbacks. The easiest way to fix this error is to restart the primary MySQL server to update the gtid_purged variable. This article discusses the need for using binlog compression and the potential issues it may cause. Sure thing!

Open Source 84

Open Source Database C++ Servers 84

Percona

DECEMBER 19, 2023

The simplest way to run it for testing is to use the docker container: docker run --name pg-tde -e POSTGRES_PASSWORD=mysecretpassword -d perconalab/postgres-tde-ext This command starts a container with the extension loaded and already enabled for the Postgres database. tde 00000000 6d 61 73 74 65 72 2d 6b 65 79 00 00 00 00 00 00 |master-key.|

Open Source 82

Open Source Storage Database C++ 82

Percona

FEBRUARY 23, 2023

If you ever had to make a quick ad-hoc backup of your MongoDB databases, but there was not enough disk space on the local disk to do so, this blog post may provide some handy tips to save you from headaches. while not overloading the CPU capacity on the production database. Therefore, applying on-the-fly compression is essential.

AWS 119

AWS Storage Database Open Source 119