摘要:
A system and method of constructing cluster views may involve determining that a process such as an application server process having an IP address is stopped. Another IP address may be assigned to the process in response to determining that the process is stopped, wherein the other IP address is dedicated to processes that are stopped. If a connection request for the process is received at the other IP address, the connection request may be actively refused. The active refusal may significantly reduce the amount of time required to generate cluster views.
摘要:
A stealth firewall. The stealth firewall can include a first network interface to an external network; a second network interface to an internal network; a packet filter for restricting access to the internal network, the packet filter ignoring requests from the external network to access the internal network; and, a state machine. Importantly, the state machine can be pre-configured to transition across one or more internal states conditioned upon receiving particular requests to access the internal network. The state machine further can include at least one state transition reachable through a pre-specified sequence of states which causes the packet filter to permit access to the internal network.
摘要:
A dynamic rebalancer operates in a server cluster independently of routers directing traffic to the servers in the cluster. An analysis component uses configuration information and statistics information to determine which session, if any, should be moved. A filter component receives transfer instructions from the analysis component. When the filter component receives transfer instructions from the analysis component, the filter component adds a redirect command to the client request. The filter component continually redirects client requests within the session to the new server until the client receives the redirect command and begins to send client requests to the new server.
摘要:
Embodiments of the present invention provide a method, system and computer program product for automated cluster member management based on node capabilities. In one embodiment of the invention, a method for automated cluster member management based on node capabilities can be provided. The method can include defining a membership policy for a cluster, the membership policy specifying a nodal configuration required for a node in a cluster. The method further can include evaluating different nodes in a computing environment against the membership policy for the cluster. Finally, the method can include associating cluster members in the cluster to only those of the nodes having respective configurations meeting the nodal configuration of the membership policy. Likewise, the method can include evaluating nodes already in the cluster, and disassociating cluster members in the cluster from those of the nodes having respective configurations failing to meet the nodal configuration of the membership policy.
摘要:
Under the present invention, a system, method, and program product are provided for reducing the overhead of cache invalidations in a shared cache by transmitting a hashed code of a key to be invalidated. The method for shared cache invalidation comprises: hashing a key corresponding to an object in a first cache that has been modified or deleted to provide a hashed code of the key, wherein the first cache forms part of a shared cache; transmitting the hashed code of the key to other caches in the shared cache; comparing the hashed code of the key with entries in the other caches; and dropping any keys in the other caches having a hash code the same as the hashed code of the key.
摘要:
Embodiments of the present invention provide a method, system and computer program product for automated cluster member management based on node capabilities. In one embodiment of the invention, a method for automated cluster member management based on node capabilities can be provided. The method can include defining a membership policy for a cluster, the membership policy specifying a nodal configuration required for a node in a cluster. The method further can include evaluating different nodes in a computing environment against the membership policy for the cluster. Finally, the method can include associating cluster members in the cluster to only those of the nodes having respective configurations meeting the nodal configuration of the membership policy. Likewise, the method can include evaluating nodes already in the cluster, and disassociating cluster members in the cluster from those of the nodes having respective configurations failing to meet the nodal configuration of the membership policy.
摘要:
A system and method of constructing cluster views may involve determining that a process such as an application server process having an IP address is stopped. Another IP address may be assigned to the process in response to determining that the process is stopped, wherein the other IP address is dedicated to processes that are stopped. If a connection request for the process is received at the other IP address, the connection request may be actively refused. The active refusal may significantly reduce the amount of time required to generate cluster views.
摘要:
The present invention provides methods of preventing and/or treating cancers (including tumors). In one preferred embodiment, the invention is practiced to induce regression of an existing cancer or tumor and/or to prevent metastasis and/or to prevent growth of metastatic nodules. In other preferred embodiments, the invention may be used as a prophylaxis to prevent the development of primary cancers through a childhood or adult vaccination program against specific tumor antigens for cancers with high incidences. In an alternate preferred embodiment, the present invention provides methods of establishing an immune response against a universal artificial tumor antigen through a childhood or adult vaccine program, thus providing a long-term immune response that can be utilized at any point to treat any cancer which develops later in life. The present invention also provides cancer and tumor cells stably expressing an artificial antigen, preferably an artificial cell-surface antigen.