\nAs I understand it, object caching is the storage of the answers to questions received by a database. The questions are called queries.<\/p>\n
\nA given query of a database will likely involve a large number of operations (value comparisons, etc). Moreover, the reply could include a list of dozens, or many more, records. Performing the comparisons, then editing the list of positives, creates demand on the server.<\/p>\n
\nPut simply, an object cache is a folder of such replies. Typically it will accumulate the common queries quickly. Then, when the database receives a query, it checks the object cache folder to see if that query has been answered before. If so, the object cache folder will also contain the reply, a copy of which the server can just send along without thinking more about it. Therefore, using an object cache can significantly reduce server demand.<\/p>\n
\nAs the database contents change, the replies in the object cache can become outdated; therefore, the object cache should be refreshed every so often.<\/p>\n
Source:<\/p>\n
wpastra.com<\/a><\/p>\nJack of Oracle Tutoring by Jack and Diane,<\/a> Campbell River, BC.\n","protected":false},"excerpt":{"rendered":" Self-tutoring about computer systems: the tutor looks into what an object cache does. As I understand it, object caching is the storage of the answers to questions received by a database. The questions are called queries. A given query of …<\/p>\n