what is mysql clustering?
360898
using multiple machines to server a MySQL database.  if one goes down, the system stays up...and the amount of requests you can service is scalable...
21111
"A computer cluster is a group of loosely coupled computers that work together closely so that in many respects it can be viewed as though it were a single computer. Clusters are commonly, but not always, connected through fast local area networks. Clusters are usually deployed to improve speed and/or reliability over that provided by a single computer, while typically being much more cost-effective than single computers of comparable speed or reliability".  Cluster computing is also called Grid computing.  This website provides a vast information on cluster computing (its similar to parallel computing but not the same).
1011647
My coldfusion is pretty rusty (php guy now) but the first question that comes to mind is, rather than use 2 seperate queries, why not use one?\n\nTry SELECT * .... etc\n\nWHERE order_ID = (SELECT MAX(order_ID) FROM Orders)\nORDER BY ... etc.\n\nThis is called a subquery or correlated subquery.  Most SQL databases support the idea.
26037
In my opinion, look upto MySQL, it is the best database for your needs. Incase you have queries regarding its setup, you can lookup to the following professional forums where people discuss such problems :\n\n(1) http://forums.mysql.com/\n(2) http://forums.devshed.com/forumdisplay.php?forumid=4\n(3) http://www.ahfb2000.com/webmaster_help_desk/archive/index.php/f-47.html
779457
Here's a simple pooling algorithm you can use:\n\n1) Create a stack (abstract data type -- java.util.Stack if you're using Java)\n\n2) Open a handful of connections to the database or server for which you're pooling connections.  Push them onto the stack.\n\n3) If someone requests a connection, pop one off the stack and give it to them.\n\n3a) If you underflowed the stack (i.e. there isn't one on the stack to give them), create another handful of connections, push them onto the stack, then pop one off the stack & return it.\n\n4) When somebody's done with a connection, the code needs to return it to the pool.  Pop the connection back onto the stack so it's there the next time someone needs it.
37648
I'm not aware of anything that lets you cluster Windows and UNIX.  Companies that do a lot of it (NSA, Google, Yahoo) do it with the same highly specialized operating system on thousands of non-descript machines.  (in fact, if you search for "Beowulf Clusters" on Amazon, there are two seperate books, one for Windows and one for Linux).\n\nClustering also really works best with a job that can be parallelized (like cracking passwords or predicting the movements of a zillion atoms).  Desktop computing doesn't tend to parallelize well, not least because most apps aren't written to take advantage of it.
582470
http://dhvrm.blogspot.com/2006/04/free-php-mysql-web-hosting.html
808315
I havn't done it mysqlf but a good place to start is with the TI-83 SDK and the documentation. The headers and required includes usually have a lot of information on how they can be used and often have a brief tutorial/starter project to build off of.
1068469
download MySQL query browser and MySQL administrator from the mysql.org site. They're free and easy to use.
1090046
A cluster is a "chunk" of data. The way data is stored on your hard drive is in what they call sectors and clusters. A sector is typically about 4,000 bytes, and a file can span many, many sectors. A cluster is a group of sectors, and again, a file can have many clusters.\n\nThese clusters can be spread out all over the disk drive (fragmentation). After reading and writing many files to a disk, some clusters may be flagged as being used even though they do not contain any data. These are called "lost clusters" and can be fixed using ScanDisk on Windows or the Disk Utility program on the Mac. \n\nIn fact, ScanDisk is probably your best bet for fixing this. Generally these lost clusters are not something to worry about. They're considered "lost" because they don't contain data and aren't associated with a file, but are flagged as being used and unavailable to the system. \n\nYou want to make sure you defragment your hard drive on a regular basis - once a month is not too often. Or, spend a few dollars on a product called Diskkeeper, which keeps your disk defragmented all the time.\n\nhttp://www.datarecoverypronto.com also has some articles.
123574
It's free, and widely deployed. This means that what "gotchas" there are are well known. There is also a good range of third-party applications that work with MySQL , so a wide range of forums / weblogs / CMS are available to use with it. phpMyAdmin is simply great.\n\nTo see what features MySQL has compared to other DBMSs, see: http://dev.mysql.com/tech-resources/features.html
880176
mysqlimport does exactly that. \n\nhttp://dev.mysql.com/doc/refman/5.0/en/mysqlimport.html
1054967
certain databases like mysql achieves this by using the dot operator "."\nsay db1 has table1(field1) and\ndb2 has table2(field2)then \n\nselect a.*,b.* from db1.table1 a,db2.table2 b where\na.field1 = b.field2
69345
Clustering is grouping machines together to transparantly provide enterprise services.\nThe client does not now the difference between approaching one server or approaching a cluster of servers.\nClusters provide two benefits: scalability and high availability\n\nJ2EE application server vendors define a cluster as a group of machines working together to transparently provide enterprise services (support for JNDI, EJB, JSP, HttpSession and component failover, and so on). They leave the definition purposely vague because each vendor implements clustering differently. At one end of the spectrum rest vendors who put a dispatcher in front of a group of independent machines, none of which has knowledge of the other machines in the cluster. In this scheme, the dispatcher receives an initial request from a user and replies with an HTTP redirect header to pin the client to a particular member server of the cluster. At the other end of the spectrum reside vendors who implement a federation of tightly integrated machines, with each machine totally aware of the other machines around it along with the objects on those machines.\n\nIn addition to machines, clusters can comprise redundant and failover-capable:\n\n    * Load balancers: Single points of entry into the cluster and traffic directors to individual Web or application servers\n    * Web servers\n    * Gateway routers: Exit points out of an internal network\n    * Multilayer switches: Packet and frame filters to ensure that each machine in the cluster receives only information pertinent to that machine\n    * Firewalls: Cluster protectors from hackers by filtering port-level access to the cluster and internal network\n    * SAN (Storage Area Networking) switches: Connect the application servers, Web servers, and databases to a backend storage medium; manage which physical disk to write data to; and failover\n    * Databases\n\nRegardless of how they are implemented, all clusters provide two main benefits: scalability and high availability (HA).\n\nScalability\nScalability refers to an application's ability to support increasing numbers of users. Clusters allow you to provide extra capacity by adding extra servers, thus ensuring scalability.\n\nHigh availability\nHA can be summed up in one word: redundancy. A cluster uses many machines to service requests. Therefore, if any machine in a cluster fails, another machine can transparently take over.\n\nA cluster only provides HA at the application server tier. For a Web system to exhibit true HA, it must be like Noah's ark in containing at least two of everything, including Web servers, gateway routers, switching infrastructures, and so on. (For more on HA, see the HA Checklist.)\n\nCluster types\nJ2EE clusters usually come in two flavors: shared nothing and shared disk. In a shared-nothing cluster, each application server has its own filesystems with its own copy of applications running in the cluster. Application updates and enhancements require updates in every node in the cluster. With this setup, large clusters become maintenance nightmares when code pushes and updates are released.\n\nIn contrast, a shared-disk cluster employs a single storage device that all application servers use to obtain the applications running in the cluster. Updates and enhancements occur in a single filesystem and all machines in the cluster can access the changes. Until recently, a downside to this approach was its single point of failure. However, SAN gives a single logical interface into a redundant storage medium to provide failover, failback, and scalability. (For more on SAN, see the Storage Infrastructure sidebar.)\n\nWhen comparing J2EE application servers' cluster implementations, it's important to consider:\n\n    * Cluster implementation\n    * Cluster and component failover services\n    * HttpSession failover\n    * Single points of failure in a cluster topology\n    * Flexible topology layout\n    * Maintenance
900598
First of all, unless there is a real good reason why have you separate 2 databases, I would recommend using a same database and create tables with different prefix. Like:\n\ncustomer_users, cusomter_invoice\nclient_users, client_data\n\nthe prefix distinguished the category of tables.\n\nwell, enough of that, here is how to use 2 dbs:\n\ncreate a database connection function:\n\nfunction connectDB($db_Name); // you call it anything u want\n{\n  // do mysql_pconnect with username and password here\n  $db_link = mysql_pconnect('server','usename','password');\n  // error check if can not connect  \n\n  mysql_select_db($db_Name);\n  // error check if can not select database\n}\n\n\nNow to use it:\nconnectDB('customer1');\n\n$rs = mysql_query('select .....'); // this will query table in customer1\n\nto switch to client1:\nconnectDB('client1');\n$rs = mysql_query('select...');\n\nthat's it!\n\nBest
305553
SQLYog is a tool for managing MySQL databases. It's not a programming environment.  you can use it to set up a MySQL database that you can then write a program in another language (PHP, Python, C#, ASP.NET, whatever) to read.  Personally, I'd recommend searching for an open source forum software that works with your service provider's setup (e.g. if you have access to PHP & MySQL, look for one that uses that, if you've got a .NET host, look for a .NET forum software).  \n\nThat's going to be a lot easier than rolling your own.  Typically I can implement a package in a couple of hours, while writing one takes days to weeks (or months...).  You'll also get the benefit of a larger group of programmers to do that.  There's a selection of open source software at opensourcecms.com that allows you to see what's out there & play with it before trying to implement it.
1062540
Microsoft Cluster Server