Writing MySQL Proxy in GO for self-learning: Part 2 — decoding handshake packet

After we built a generic TCP proxy, we can continue with our journey. Today’s goal will be to understand the MySQL Protocol, receive, decode, encode and send to the client the first packet sent by the MySQL Server.

MySQL connections threads

Each client connection to MySQL Server handled by a thread. MySQL is portable, so the underhood threads implementation is system dependent (Windows, macOS, and Linux have their own threads implementation).

What important to us, it’s to understand that a single client connection …

Writing MySQL Proxy in GO for self-learning: Part 1 — TCP Proxy

Weekend. Quarantine. If you bored like me, and want to learn something new, you can join my journey of writing yet another MySQL Proxy Server.

In the past, I had a crazy idea of writing MySQL Proxy Server. The first reason was to understand the MySQL Communication Protocol to let me write more efficient programs. The second one was to learn more about low-level network programming concepts in general. Finally, I have time at least to start… and you can join me!

The real usage of MySQL Proxy can vary:

• Testing and benchmarking of the infrastructure
• Testing your applications for dealing with MySQL network failures and delays
• Wrap the MySQL usage with own business layer
• Load balancing
• Multiplexing

Prelude

I’m not sure if I can …

There are many users of MySQL in Cloud environment regions. It’s ideal that those MySQL instances are implemented with only private-ips in the respective Subnet. No public-ips. For that matter, all cloud infrastructure resources are ideally placed behind networks that provision only private-ips.  This limits any front-end attack surface for an application stack.  Certainly the up coming MySQL… Read More »

Many things in the MySQL 8.0 Series has evolved. I’ve discussed many of those things in prior blogs such as items like the MySQL-Router w/InnoDB Cluster, plus a Series on Enterprise Backup with InnoDB Cluster Backup & Restore Use Cases. But now its time to update everyone on the evolution of the Yum Repo packaging in MySQL 8.0.18!… Read More »

At MariaDB Foundation, we are proud of MariaDB Server getting plenty of contributions. But we don’t want to get cocky, so here is an update about where we stand, and what we want to make happen. First, we have shown our contribution pride in several places. On 15 February 2019, I tweeted On code contributions, […]

The post On Contributions, Pride and Cockiness appeared first on MariaDB.org.

MariaDB Server 10.4 came with a whole lot of Security related changes. Some of them are merely optimizations (like MDEV-15649), some improve existing features to be more robust (MDEV-15473, MDEV-7598) or convenient (MDEV-12835, MDEV-16266). Some are MySQL compatibility features, requested by our users (MDEV-7597, MDEV-13095). But the first thing any MariaDB Server user, whether an […]

The post Authentication in MariaDB 10.4 — Understanding the Changes appeared first on MariaDB.org.

After a conference, when I take stock of what I have learned, I usually realise that the best achievements are the result of interacting with other attendees during the breaks, rather than simply listening to the lectures. It might be because I follow closely the blogosphere and thus the lectures have few surprises in store for me, or perhaps because many geeks take the conference as an excuse to refresh dormant friendships, catch up with technical gossip, and ask their friends some questions that were too sensitive to be discussed over Twitter and have been waiting for a chance of an in-person meeting to see the light of the day.

I surely had some of such questions, and I took advantage of the conference to ask them. As it often happens, I got satisfactory …

The tutorial guides you through MySQL Database connectivity with Entity Framework
We are facing entity framework database provider compatible with version could not be found for your data connection issue while connecting with MySQL 5.7 and 8.0. Problem with MySql.Data.Entity.EF6.dll missing and not able to connect with Entity framework
As per my requirements, the customer wants to migrate MSSQL to MySQL server. So I want to use any version of MySQL, installed with below configurations and achieve the connectivity  1.MySQL Server : 5.6.41
2.MySQL Connector/Net : 6.9.12
3.Entity Framework : 6.2.0
4.Visual Studio : Professional 2017 Configuration steps are below,
1. Download required versions,
MySQL - https://dev.mysql.com/downloads/windows/installer/5.7.html
Visual Studio - https://visualstudio.microsoft.com/downloads/
2. Once downloaded, …

While automatic filling of HTTP basic auth credentials works fine on the Mac, I have had significant trouble getting it to work on iOS devices. This is especially unfortunate, because while on the road I sometimes need to have a look at monitoring systems that have HTTP basic authentication enabled and that use long complex passwords. Should be easy with iCloud keychain, right? Yeah...

Opening the respective site in iOS Safari pops up the basic auth credentials dialog. It also shows the little key icon in the keyboard toolbar which gives access to iCloud keychain entries. However, while on the Mac the username and password fields are correctly populated, on iOS you cannot even see the respective entry.

Turns out, and I assume this is a bug in iOS Safari, the type of keychain entries shown is limited to "Web form password". Safari on the Mac stores the entry as "Internet Password" though, as can be seen in the Keychain Access …

The following sessions were held on the two presentation days of the MariaDB Developers Unconference in Shenzhen. Day 1 MariaDB in 2017 (Otto Kekäläinen) What’s in the pipeline for 10.3 and beyond (Monty) – Slides AliSQL Roadmap (Xiao Bin) JSON support in MariaDB (Vicențiu Ciorbaru) – Slides Replication (Lixun Peng) Encryption key management (Ben) InnoDB […]

The post Presentations from the 2017 MariaDB Developers Unconference in Shenzhen appeared first on MariaDB.org.