Abstract: An account manager plug-in for a Web server having an application programming interface (API). The plug-in is preferably a computer program product comprising a set of instructions (program code) encoded on a computer-readable substrate. This plug-in includes program code for establishing a set of one or more monitored resources (e.g., UrlCounter, ByteCounter, PageCounter and FailedLoginCounter) and for defining a threshold rule for at least one of the set of monitored resources. As Web transactions occur at the Web server, the account manager is responsive to a monitored resource exceeding a condition of a threshold rule for triggering one of a set of threshold actions. The set of threshold actions, for example, include clearing a record counter, running a given program, sending an e-mail note and disabling or enabling a user account.

Abstract: A method of enabling persistent access by a Web server to files stored in a distributed file system of a distributed computing environment that includes a security service. A session manager is used to perform a proxy login to the security service on behalf of the Web server. Persistent operation of the session manager is ensured by periodically spawning new instances of the session manager process. Each new instance preferably initializes itself against a binding file. A prior instance of the session manager is maintained in an active state for at least a period of time during which the new instance of the session manager initializes itself. Upon receipt of a given transaction request from a Web client to the Web server, a determination is made regarding whether a new instance of the session manager process has been spawned while the Web server was otherwise idle.

Abstract: A method of enabling a Web server to impersonate a Web client to thereby obtain access to files stored in a distributed file system of a distributed computing environment. The distributed computing environment includes a security service for returning a credential to a user authenticated to access the distributed file system. In response to receipt of a transaction request from the Web client, a determination is made whether the transaction request has originated from a user authenticated to access the distributed file system. If so, the Web server is controlled to reuse the credential of the user across multiple file accesses in the distributed file system on behalf of the Web client.

Abstract: A method of authenticating a Web client to a Web server connectable to a distributed file system of a distributed computing environment. The distributed computing environment includes a security service for returning a credential to a user authenticated to access the distributed file system. In response to receipt by the Web server of a user id and password from the Web client, a login protocol is executed with the security service. If the user can be authenticated, a credential is stored in a database of credentials associated with authenticated users. The Web server then returns to the Web client a persistent client state object having a unique identifier therein. This object, sometimes referred to as a cookie, is then used to enable the Web client to browse Web documents in the distributed file system.

Abstract: A method, system and process for enhancing a database server by improving dynamic memory allocation and memory copying during the process of reconstructing a data structure from a communication buffer.

Abstract: A consistency control method for a fault tolerant file system. Data files in this fault tolerant file system are replicated on file system servers. The update request will be sent to all the file servers. However, since different servers might receive update requests in different order. The "dual-counter" scheme described in this invention is to resolve this problem. To perform an update, the client needs to obtain a sequence number from a sequencer. Two counters will be maintained by each server. The first counter is used primarily by the sequencer to sent out sequence numbers. The second counter is used by the server to keep track of the largest sequence number of requests which have been completed on the server. With the sequence numbers and the first and second counters, updates will be performed in the same order on different file servers.

Abstract: For concurrent access by a plurality of users to a data set in a memory, a computer system first searches for a write lock on a first portion of the data set which the user wishes to access. For no write lock detected, the request is granted by allowing write access to the first portion. A write lock is placed on the first portion of the data set to prevent other users from changing it, while allowing other users read access to the first portion. If a second user wants write access to a second not interesting portion of the data set, the process is similar. A search for a write lock on a second portion of the data set is conducted. If not found, the second user's request for write access to the second portion is granted. A write lock on the second portion is placed to prevent other users from changing the second portion while allowing read access.

Abstract: A method, system and process for enhancing a database server by improving memory allocation and memory copying during the process of reconstructing a data structure.