In this blog post, we talk about the Automatic Reconnect feature in the Tungsten Connector.

Automatic reconnect enables the Connector to re-establish a connection in the event of a transient failure. Under specific circumstances, the Connector will also retry the query.

Connector automatic reconnect is enabled by default in Proxy and Smartscale modes.

Use the following tpm command option on the command line (remove the leading hyphens inside INI files):

--connector-autoreconnect=false

to disable automatic reconnect.

This feature is not available while running in Bridge Mode. Use the tpm command option --connector-bridge-mode=false to disable Bridge mode.

Automatic reconnect enables retries of statements under the following circumstances:

• not in bridge mode
• not inside a transaction
• no temp table has been created
…

In this blog post, we talk about how existing client connections are handled by the Tungsten Connector when a manual master role switch is invoked and how to adjust that behavior.

When a graceful switch is invoked via cctrl or the Tungsten Dashboard, by default the Connector will wait for five (5) seconds to allow in-flight activities to complete before forcibly disconnecting all active connections from the application side, no matter what type of query was in use.

If connections still exist after the timeout interval, they are forcibly closed, and the application will get back an error.

This configuration setting ONLY applies to a manual switch. During a failover caused by loss of MySQL availability, there is no wait and all connections are force-closed immediately.

This timeout is adjusted via the tpm option …

In this blog post, we talk about the basic function and features of the Tungsten Connector.

The Tungsten Connector is an intelligent MySQL proxy that provides key high-availability and read-scaling features. This includes the ability to route MySQL queries by inspecting them in-flight.

The most important function of the Connector is failover handling. When the cluster detects a failed master because the MySQL server port is no longer reachable, the Connectors are signaled and traffic is re-routed to the newly-elected Master node.

Next is the ability to route MySQL queries based on various factors. In the default Bridge mode, traffic is routed at the TCP layer, and read-only queries must be directed to a different port (normally 3306 for writes and 3307 for reads).

There are additional modes, Proxy/Direct and …

In this blog post, we talk about how query connections are handled by the Tungsten Connector, especially read-only connections.

There are multiple ways to configure session handling in the Connector. The three main modes are Bridge, Proxy/Direct and Proxy/SmartScale.

In Bridge mode, the data source to connect to is chosen ONCE for the lifetime of the connection, which means that the selection of a different node will only happen if a NEW connection is opened through the Connector.

So if your application reuses its connections, all traffic sent through that session will continue to land on the selected read slave, i.e., when using connection pooling.

http://docs.continuent.com/tungsten-clustering-6.0/connector-bridgemode.html

The key difference is in how the slave latency checking is handled: …

The MariaDB Foundation is pleased to announce the availability of MariaDB 10.0.35, MariaDB Galera Cluster 5.5.60 as well as MariaDB Connector/C 3.0.4, all stable releases. See the release notes and changelogs for details. Download MariaDB 10.0.35 Release Notes Changelog What is MariaDB 10.0? MariaDB APT and YUM Repository Configuration Generator Download MariaDB Galera Cluster 5.5.60 […]

The post MariaDB 10.0.35, MariaDB Galera Cluster 5.5.60 and MariaDB Connector C 3.0.4 now available appeared first on MariaDB.org.

Dear MySQL users,

MySQL Connector/NET 6.10.7 is the fourth GA release with .NET Core
now supporting various connection-string options and MySQL 8.0 server
features.

To download MySQL Connector/NET 6.10.7 GA, see the “Generally Available
(GA) Releases” tab at http://dev.mysql.com/downloads/connector/net/

Changes in MySQL Connector/NET 6.10.7 (2018-04-30, General Availability)

Functionality Added or Changed

* Connections made to MySQL 8.0 (up to and including
version 8.0.3) and compatibility with the new data dictionary are
now supported. For information about the data dictionary, see
MySQL Data Dictionary
(http://dev.mysql.com/doc/refman/8.0/en/data-dictionary.html).

* Support for the caching_sha2_password …

Dear MySQL users,

MySQL Connector/Python 8.0.11 is the first GA release version of the MySQL Connector Python 8.0 series. This series adds support for the new X DevAPI. The X DevAPI enables application developers to write code that combines the strengths of the relational and document models using a modern, NoSQL-like syntax that does not assume previous experience writing traditional SQL.

To learn more about how to write applications using the X DevAPI, see http://dev.mysql.com/doc/x-devapi-userguide/en/. For more information about how the X DevAPI is implemented in MySQL Connector/Python, and its usage, see http://dev.mysql.com/doc/dev/connector-python.

Please note that the X DevAPI requires MySQL Server version 5.7.12 or higher with the X Plugin enabled. For general …

The MySQL Connector/Python Team is pleased to announce MySQL Connector/Python 8.0.11, the first GA 8.0 release series of the official MySQL driver for Python. This release introduces the first Python driver that adds full MySQL 8.0 support.

Document Store

MySQL 8.0 includes many improvements and new features, with Document Store being the biggest.

MySQL Document Store is schema-less with a flexible data structure storage system for documents. This removes the requirement for schema design, normalization, foreign keys, constrains, and data types.

The Document Store is accessible by the X DevAPI, an API that introduces a new modern and easy-to-learn way to …

We are proud to announce that with version 8.0.11 the new MySQL Connector/C++ 8.0 series becomes GA! Connector/C++ 8.0 is your gateway to the new exciting features of MySQL Server 8.0 such as MySQL Document Store. It also lets you perform your usual database tasks in a simpler and more powerful way using new, modern APIs that bring to you the full advantage of modern C++ programming language.

The 8.0 series is a true milestone in the development of Connector/C++. We have not only added new APIs but also completely re-implemented the connector to create good foundation for future innovation and improvements.The new implementation of Connector/C++ is based entirely on the new X Protocol of MySQL Server 8.0 and is highly modular to allow rapid development of new features. For the first time we aligned our APIs with other MySQL connectors. Also, for the …

Dear MySQL users,

MySQL Connector/C++ 8.0.11 is the first GA release version of the
MySQL Connector/C++ 8.0 series.

Connector/C++ 8.0 can be used to access MySQL implementing Document
Store or in a traditional way, using SQL queries. It allows writing
both C++ applications using X DevAPI or plain C applications using
XAPI.

To learn more about how to write applications using X DevAPI, see
“X DevAPI User Guide”

https://dev.mysql.com/doc/x-devapi-userguide/en/

and “X DevAPI Reference” at

https://dev.mysql.com/doc/dev/connector-cpp/devapi_ref.html

For more information about using plain C XAPI see “XAPI Reference” at

…