A method of inserting cache blocks into a cache queue includes detecting a first cache miss for the cache queue, identifying a storage block receiving an access in response to the cache miss, calculating a first estimated cache miss cost for a first storage container that includes the storage block, calculating an insertion probability for the first storage container based on a mathematical formula of the first estimated cache miss cost, randomly selecting an insertion probability number from a uniform distribution, and inserting, in response to the insertion probability exceeding the insertion probability number, a new cache block corresponding to the storage block into the cache queue.

Method and system for inserting cache blocks

Method for replacing cache files, device and system thereof

The invention relates to a web cache replacement method based on access density. The web cache replacement method resolves the problems that existing least recently used (LRU) has locality, least frequently used (LFU) has cache pollution, and the hit rate is low. The web cache replacement method based on the access density includes judging whether cache objects exist in a memory pool; judging whether the memory pool is full; initializing multiply; deleting the cache object having the lowest density, and enabling newly increased cache objects to be added to the memory pool; calculating current access intervals; judging whether second access is conducted; calculating the access density; calculating the access density according to formulas, and updating even access intervals; updating relative values; and exiting. The web cache replacement method is applied to the field of internet storage.

Web cache replacement method based on access density

The invention is suitable for the technical field of data storage, and provides a data reading and writing method and device for flash memory equipment and a host system. The method comprises the following steps: applying for a plurality of reading and writing caches of first fixed values in the cache of the host system, wherein the first fixed values are integer times of flash memory pages in the flash memory equipment; during data writing, writing data of which the writing address are unaligned with the reading and writing caches and/or small file data and/or data of which the writing addresses are writing hot addresses in data to be written into the reading and writing caches; and when the number of empty reading and writing caches is smaller than or equal to a preset fourth fixed value and/or the host system is in an idle state and/or satisfies a preset condition, writing data in the reading and writing caches into the flash memory equipment. according to the method, the device and the system, the problems of data copy and migration performed continuously in a writing process due to misalignment of addresses or writing of the small file data can be reduced greatly, and the data reading and writing efficiency of the flash memory equipment is increased.

Data reading and writing method and device for flash memory equipment and host system

The invention discloses a data elimination method, device and system in a caching system and related server equipment. The data elimination method in the caching system comprises the steps: receiving data inquiring information, wherein the data inquiring information comprises a data inquiring result set, data inquiring executing time and data access time; in allusion to each data record contained in the data inquiring result set, executing the following operations: while determining that the data elimination chain table does not contain the data record, according to the data record in the data elimination chain table in which the least recently used (LRU) end data access time is the same and the data inquiring execution time is the shortest, inserting the data record in the most recently used (MRU) end of the data elimination chain table.

Data elimination method, device and system in caching system and related server equipment

A management method of buffer storage includes obtaining applied web file and updating attribute of web file, utilizing said attribute to carry out classification on web file, placing web file into relevant buffer queue according to classification result then regulating object in said queue, deleting historical object according to calculation access weight when web file is obtained from remote web server and there is no enough root to store said web file in buffer storage and carrying out classification according to calculation classification weight.

Buffer store management method

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Buffer store management method