摘要:
A method of caching contextually variant objects in a common cache. The method can include identifying an object type for a requested object and determining whether the requested object has an object type which is specified among an enumerated set of cacheable object types which can be stored in the common cache. Importantly, each cacheable object type can have an associated context. If the requested object has an object type which is specified among the enumerated set of cacheable object types, a cache key can be computed for the requested object using cache key formulation rules for the associated context. Finally, the requested object can be retrieved from the common cache using the formulated cache key. Notably, in one aspect of the invention, the method also can include the step of invalidating individual objects in the common cache according to corresponding cache policies of associated contexts.
摘要:
The present invention provides a method, system, and computer program product for supporting a large number of intermittently used application clusters without consuming all the resources needed to run server processes for all the application clusters all the time. A method in accordance with the present invention comprises: holding an application request for a dormant application cluster in a holding zone; changing a status of the dormant application cluster to active; changing a status of an unused active application cluster to dormant; stopping server processes for the newly dormant application cluster; starting server processes for the newly active application cluster; and directing the application request held in the holding zone to the server processes for the newly active application cluster.
摘要:
Controlling a cache of distributed data is provided by dynamically determining whether and/or where to cache the distributed data based on characteristics of the data, characteristics of the source of the data and characteristics of the cache so as to provide an indication of whether to cache the data. The data may be selectively cached based on the indication.
摘要:
A method, system and apparatus for on-demand application resource allocation. In accordance with the method of the invention, an anticipated workload can be compared to a measured capacity for an application cluster in one or more server computing nodes in a server farm. If the measured capacity warrants a re-configuration of the application clusters, a new placement can be computed for application server instances in individual ones of the server computing nodes. Subsequently, the new placement can be applied to the server computing nodes in the server farm. In this regard, the applying step can include starting and stopping selected ones of the application server instances in different ones of the server computing nodes to effectuate the new placement.
摘要:
Embodiments of the present invention provide a method, system and computer program product for weather adaptive environmentally hardened appliances. In an embodiment of the invention, a method for weather adaptation of an environmentally hardened computing appliance includes determining a location of an environmentally hardened computing appliance. Thereafter, a weather forecast including a temperature forecast can be retrieved for a block of time at the location. As a result, a cache policy for a cache of the environmentally hardened computing appliance can be adjusted to account for the weather forecast.
摘要:
A technique, system, and computer program for collecting information about user behavior in the presence of dynamic page content. Regular expressions are used to describe dynamic page content and classify pages into equivalence classes. A Web site monitoring tool using this collection technique to create user profiles can then contend with a range of dynamic page content.
摘要:
The inventive process comprises and improved process for displaying hierarchical information in a treemap by associating a different color with each nested treemap in a parent treemap, and generating a gradient for each color to preserve the representative value of varying shades. In general, a user divides the hierarchical information into clusters of nodes, designates a primary weight and a secondary weight for each cluster, and designates a base color for each cluster. The inventive process then divides the range of each cluster's secondary weight into bins, adjusts each cluster's base color to create a distinguishing gradient of the base color, assigns a distinguishing gradient to each bin, and draws a nested treemap for each cluster so that each nested treemap has a cluster's base color and each node in the cluster is represented by a bounding box having a distinct gradient of the cluster's base color.
摘要:
A system and method are disclosed for leveraging bandwidth and processor utilization to advantageously influence response time performance. The objective of such leveraging is to maximize transaction throughput (e.g., requests per second) between a pair of servers when the servers are connected through less than optimal networks and/or network connections. Such an optimization is accomplished by determining whether or not adjusting request and/or reply sizes by applying a compression factor (i.e., to facilitate compression) will have a desirable influence on response time performance. Such determination is based on decision criteria including, but are not limited to, network protocol performance, CPU utilization, bandwidth utilization, and estimates of the CPU time and network time costs of sending compressed verses uncompressed data.
摘要:
Embodiments of the present invention provide a method, system and computer program product for wireless tower caching. In an embodiment of the invention, a method for wireless tower caching in a radio access network (RAN) can include receiving a response to a request from an end user device wirelessly coupled to a base station of the RAN, determining geographic positioning data for the response and identifying a most geographically wireless tower coupled to the RAN relative to the determined geographic positioning data (such as the closest wireless tower to the determined geographic positioning data). Thereafter, the response can be cached at a cache in a base station of the identified wireless tower. In this way, the cached content can remain relevant for a significant period of time in as much as the correlation between a likely position of the end user device and the content cached at the base station of the wireless tower at the time of use of the cached content is strong.
摘要:
Embodiments of the present invention provide a method, system and computer program product for weather adaptive environmentally hardened appliances. In an embodiment of the invention, a method for weather adaptation of an environmentally hardened computing appliance includes determining a location of an environmentally hardened computing appliance. Thereafter, a weather forecast including a temperature forecast can be retrieved for a block of time at the location. As a result, a cache policy for a cache of the environmentally hardened computing appliance can be adjusted to account for the weather forecast.