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MySQL Newsletter December 2003

Newsletters older than 6 months may have links that are out of date. Please use the Search to check for updated links.

Introduction

  • MySQL User Conference 2004 - Call for Papers
    The Call for Papers for the 2004 MySQL Users Conference is now officially open. We encourage every MySQL user with something to say - from grey-bearded hackers and peach-fuzzed power users to corporate code wranglers and veteran DBAs - to drop by the online call-for-papers and write up your proposals for great sessions.
     
  • A Guide to Lower Database TCO
    A recent Computerworld article, 'MySQL Breaks Into the Data Center' revealed how MySQL has become the world's most popular open source database and why corporations intent on lowering their cost of operations are using it to further commoditize their IT infrastructure.

    MySQL reduces the Total Cost of Ownership (TCO) of database software by:
    · Reducing database licensing costs by over 90%
    · Cutting systems downtime by 60%
    · Lowering hardware expenditure by 70%
    · Reducing administration, engineering and support costs by up to 50%

    In our white paper we'll show you how. You'll also learn how organizations such as Cox Communications, NASA, Sabre Holdings and Yahoo! have improved database reliability, performance and TCO using MySQL. You'll see how these techniques can apply in your organization.

    Get the full white paper at http://www.mysql.com/tco
     

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MySQL Tips & Hints

  • How can I run Multiple MySQL Servers on a Single Computer?
    How can I run Multiple MySQL Servers on a Single Computer?

    It is possible to run several MySQL servers on the same machine, provided that they don't work with same data. Each mysqld should have its own data directory.
     

  • How to Ensure that Data is Written to Disk?
    How can I ensure that when data is written, it is also really written to disk.

    When MySQL writes data, it gives it to the operating system.
    It is a feature of some operating systems that they use "lazy
    writes." That is, they do not actually write the data immediately,
    but buffer it in memory for a short while. This allows the operating
    system to optimize disk I/O in general. However, it also means that
    data written by MySQL may not actually be written to disk immediately.
     

  • Controlling InnoDB Log Flushing
    If you compare the insert speeds of InnoDB and MyISAM, sometimes there might be quite large performce difference. Generally the
    InnoDB performance, when compared with MyISAM, is affected by the innodb_flush_log_at_trx_commit configuration option.
     
  • Correcting Java Disconnect Errors
    I have a servlet/application that works fine for a day, and then stops working overnight? What can I do?

    MySQL closes connections after 8 hours of inactivity. You either need to use a connection pool that handles stale connections or use the "autoReconnect" parameter (see "Developing Applications with MySQL Connector/J").
     

  • Tips to Achieving Fast Web Response under Peak Loads
    In a web environment, apart from optimizing your queries and your application, what can be done to ensure proper functioning of your system during high load peaks?
     

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