Keeping the Uber platform reliable and real-time across our global markets is a 24/7 business. People may be going to sleep in San Francisco, but in Paris they’re getting ready for work, requesting rides from Uber driver-partners. At that same …

The post DBEvents: A Standardized Framework for Efficiently Ingesting Data into Uber’s Apache Hadoop Data Lake appeared first on Uber Engineering Blog.

Click Here to Complete our New Survey!

Last year we informally surveyed the open source community and our conference attendees.
The results revealed that:

• 48% of those in the cloud choose to self-manage their databases, but 52% were comfortable relying on the DBaaS offering of their cloud vendor.
• 49% of people said “performance issues” when asked, “what keeps you up at night?”
• The major decision influence for buying services was price, with 42% of respondents keen to make the most of their money.

We found this information so interesting that we wanted to find out more! As a result, we are pleased to announce the launch of our first annual Open Source Data Management Software Survey.

The final results will be 100% anonymous, and will be made freely available on Creative Commons. …

Since MySQL 5.7 one can put indexes on expressions, aka functional indexes, using generated columns. Basically you first need to use the generated column to define the functional expression, then indexed this column.

Quite useful when dealing with JSON functions, you can find an example here and the documentation there.

Starting with MySQL 8.0.13 we have now an easiest way to create functional indexes (or functional key parts as mentioned in the documentation) \o/

Let’s see how with a quick practical example.

In this tutorial, we'll build a RESTful CRUD application with PHP & MySQL in the backend and Vue.js in the frontend. We'll also be using Axios for sending Ajax request to PHP from Vue.

The Vue.js library, Axios client and Ajax technology allows you to fetch and display data in your application without the need to refresh the whole page each time.

For database we'll be using MySQL, the most popular database used by PHP developers.

Creating the MySQL Database

In your terminal, start the MySQL client using: mysql -u root -p

Enter your password when prompted and hit Enter.

Next, create a database using the following SQL statement: mysql> create database vuedb;

Next, create the following SQL table in your vuedb database: mysql> use vuedb; mysql> CREATE TABLE `contacts` ( `id` int(11) NOT NULL PRIMARY KEY AUTO_INCREMENT, `name` varchar(100) NOT NULL, `email` varchar(100) NOT NULL, …

MySQL is one of the most popular databases in the world and Node.js is a complete platform for building server side applications.

Node.js is commonly used with NoSQL databases but you can also use it with SQL-based databases like MySQL and Oracle. Check out Node.js Oracle CRUD Example: Database Connection & SQL Queries.

In this tutorial, we'll see how you can use MySQL in Node.js by creating a connection and executing SQL queries for performing CRUD operations.

We'll be looking at the node-mysql module for connecting to a MySQL server from your Node.js applications.

Using MySQL in Node.js

You can use MySQL in Node.js through various modules such as node-mysql or node-mysql2.

Let's see how we can use the node-mysql2 (fast node-mysql compatible mysql driver for node.js) for connecting to create a database and perform CRUD operations against it.

In nutshell, these are the required steps …

MySQL InnoDB Cluster is evolving very nicely. I realized that the MySQL Shell also improved a lot and that it has never been so easy to setup a cluster on 3 new nodes.

This is a video of the updated procedure on how to install MySQL InnoDB Cluster on GNU Linux rpm based (Oracle Linux, RedHat, CentOS, Fedora, …)

Tutorials and initial sessions are set for the Percona Live Open Source Database Conference 2019, to be held May 28-30 at the Hyatt Regency in Austin, Texas! Percona Live 2019 is the premier open source database conference event for users of MySQL®, MariaDB®, MongoDB®, and PostgreSQL. It will feature 13 tracks presented over two days, plus a day of hands-on tutorials. Register now to enjoy our best Super Saver Registration rates which end March 17, 2019 at 11:30 p.m. PST.

Sample Sessions

Here is one item from each of our 13 tracks, samples from our  …

Recently, we had an edge case where a MySQL slave went out-of-sync but it couldn’t be rebuilt from scratch. The slave was acting as a master server to some applications and it had data was being written to it. It was a design error, and this is not recommended, but it happened. So how do you synchronize the data in this circumstance? This blog post describes the steps taken to recover from this situation. The tools used to recover the slave were pt-slave-restart, pt-table-checksum, pt-table-sync and mysqldiff.

Scenario

To illustrate this …

MariaDB OpenWorks happened February 25 – 27, 2019 in New York City. It was filled with plenty of activity.

The keynote by Michael Howard, C.E.O. of MariaDB, is an interesting watch, one with many quoted articles especially around “strip-mining open-source technologies and companies,” and “abusing the license and privilege, and not giving back to the community.” Many articles were written about this topic, and it’s clear that open-source has arrived considering all of the success around the IBM acquisition of Red Hat, the Elastic I.P.O., the Microsoft acquisition of GitHub, the SalesForce acquisition fo MuleSoft and the MongoDB I.P.O.

Seppo Jaakola, the C.E.O. of Codership, talked about …

In this tutorial, you'll create an example REST API CRUD Angular 7 application with PHP and MySQL back-end.

You will be creating a simple RESTful API that supports GET, POST, PUT and DELETE requests and allow you to perform CRUD operations against a MySQL database to create, read, update and delete records from a database.

For the application design, It's a simple interface for working with vehicle insurance policies. For the sake of simplicity, you are only going to add the following attributes to the policies database table:

number which stores to the insurance policy number, amount which stores the insurance amount.

This is of course far from being a complete database design for a fully working insurance system. Because at least you need to add other tables like employees, clients, coverage, vehicles and drivers etc. And also the relationships between all these entities.

Prerequisites

In …