Abstract: Omni-directional orthogonally-polarized antenna system for MIMO applications are disclosed herein. An example antenna system comprises two arrays of horizontally polarized radiating elements, and two arrays of vertically polarized radiating elements, each array having roughly 180-degree radiation pattern, disposed about a central axis in a common horizontal plane, arrays of common polarization separated by 180-degrees. Also, the example antenna system includes at least one printed circuit board having a saw tooth pattern, wherein uniform coverage in both vertical and horizontal polarization over 360 degrees is provided using beamforming and polarization diversity.

Abstract: Provided are methods and systems for peer recovery from remote storage. An example method includes storing, to a remote storage, a data snapshot of a plurality of nodes of a cluster, determining, by the cluster, that a piece of data stored on a first node of the cluster needs to be copied to a second node of the cluster, and in response to the determination, causing, by the cluster, the second node to download a copy of the piece of data from the data snapshot in the remote storage, determining, by the cluster, that the piece of data stored on the first node differs from the copy of the piece of data stored on the data snapshot, and in response to the determination, causing copying of the piece of data directly from the first node to the second node.

Abstract: Provided are systems and methods for multi-layer caching of data. An example method commences with creating a data structure on top of an information retrieval library. The data structure is designed to access data associated with the information retrieval library through a local index. The method includes creating a plurality of ordered cache layers for the data accessed via the local index. The plurality of ordered cache layers are ordered based on frequency of access and a last layer is used to access the data over a network. The method then continues with receiving a search query. The method further includes determining that the search query is for the data associated with the last layer. The method further continues with executing, using the local index, the search query locally to retrieve a matching document from the data associated with the last layer remotely.

Abstract: Snapshot lifecycle management systems and methods are disclosed herein. An example method includes establishing a repository for a user, determining indices for the user, generating a snapshot lifecycle policy for the indices of the cluster. The snapshot lifecycle policy comprises snapshot gathering parameters that dictate when and how often snapshots of indices of the cluster are obtained, as well as retention parameters that control how long the snapshots are stored and when the snapshots are to be deleted. The method includes storing the snapshots for the indices of the cluster in the repository according to the snapshot gathering parameters, and managing retention of the snapshots stored in the repository according to the retention parameters.

Abstract: Snapshot lifecycle management systems and methods are disclosed herein. An example method includes establishing a repository for a user, determining indices for the user, generating a snapshot lifecycle policy for the indices of the cluster. The snapshot lifecycle policy comprises snapshot gathering parameters that dictate when and how often snapshots of indices of the cluster are obtained, as well as retention parameters that control how long the snapshots are stored and when the snapshots are to be deleted. The method includes storing the snapshots for the indices of the cluster in the repository according to the snapshot gathering parameters, and managing retention of the snapshots stored in the repository according to the retention parameters.

Abstract: An E-commerce system logic of defining product specifications with or without option variable questions by means of a XSD file. The XSD file (or other Document Type Definitions (DTD) files) defines: type of data input, more information links, format ability, edit rules on the answer, and error message words if input errors occur. The option selections will have user definable interrelationship with cross checking between options. Each option element has the ability to invoke a specified “More Information” link with answers integrated back to the questions. Real time Scalable Vector Graphic (SVG) layout can be achieved in the More Information screen. The XSL file is used to define various components such as: math to compute the selling price, shipping cost, sales tax & other fields. The resultant option answers with or without SVG is retained in XML format in a single table within the database. The final checkout order will not occur until the update cart has been successfully completed without any errors.