A non-transitory computer-readable recording medium is provided in which a port switching program for causing a computer to execute a process including: transmitting, in response to a mirror switching instruction that specifies a migration source port and a migration destination port, a first mirror switching notification to a virtual switch that has the migration destination port to request a change of mirror setting in the migration destination port; canceling mirror setting for a transmission packet to the migration destination port in the migration source port; and canceling mirror setting for a received packet from the migration destination port in the migration source port in response to a second mirror switching notification from the virtual switch, the second mirror switching notification indicating the change of the mirror setting in the migration destination port is stored.

Various systems and methods may be used to implement a software defined industrial system. For example, an orchestrated system of distributed nodes may run an application, including modules implemented on the distributed nodes. The orchestrated system may include an orchestration server, a first node executing a first module, and a second node executing a second module. In response to the second node failing, the second module may be redeployed to a replacement node (e.g., the first node or a different node). The replacement mode may be determined by the first node or another node, for example based on connections to or from the second node.

Various systems and methods may be used to implement a software defined industrial system. For example, an orchestrated system of distributed nodes may run an application, including modules implemented on the distributed nodes. The orchestrated system may include an orchestration server, a first node executing a first module, and a second node executing a second module. In response to the second node failing, the second module may be redeployed to a replacement node (e.g., the first node or a different node). The replacement mode may be determined by the first node or another node, for example based on connections to or from the second node.

A distributed computing system is described that leverages a nearline storage layer to minimize the downtime required for bootstrapping a new computing cluster in the distributed computing system. The system executes a computing cluster comprising a set of computing nodes and determines a set of one or more data segments to be written to a nearline storage system. The system writes the data segments to the nearline storage system. In certain examples, the system receives a request to create a second computing cluster and responsive to the request, bootstraps the second computing cluster using the set of data segments stored on the nearline storage system. The system additionally leverages the nearline storage layer to accelerate query processing by the computing nodes of a computing cluster.

A proxy server receives from a client device a request for a network resource that is hosted at an origin server for a domain. The request is received at the proxy server as a result of a DNS request for the domain resolving to the proxy server. The origin server is one of multiple origin servers that belong to different domains that resolve to the proxy server and are owned by different entities. The proxy server retrieves the requested network resource. The proxy server determines that the requested resource is an HTML page, automatically modifies the HTML page, and transmits the modified HTML page to the client device.

A proxy server receives from a client device a request for a network resource that is hosted at an origin server for a domain. The request is received at the proxy server as a result of a DNS request for the domain resolving to the proxy server. The origin server is one of multiple origin servers that belong to different domains that resolve to the proxy server and are owned by different entities. The proxy server retrieves the requested network resource. The proxy server determines that the requested resource is an HTML page, automatically modifies the HTML page, and transmits the modified HTML page to the client device.

A system that detects energy resource outages includes: resource monitors, each disposed within radio range of resource meters that transmit corresponding radio signals indicative of meter identifiers and current readings, where the resource monitors are configured to receive and decode the radio signals to obtain one or more of the meter identifiers and current readings, and where the each of the resource monitors transmits the one or more of the meter identifiers and current readings over the internet cloud; and a resource server, operatively coupled to the resource monitors via the internet cloud, configured to receive the one or more meter identifiers and current readings from the resource monitors, and configured to employ the current readings to detect an outage within a geographic area, and configured to send alerts to a resource provider that correspond to the outage.

Techniques for concurrent node startup are provided. A first startup instruction is received by a first node of a plurality of nodes, and the first node enters an initial startup state. The first node further transmits a first ping to the plurality of nodes, and determines, based on the first ping, that none of the plurality of nodes are in an active state or in a secondary startup state. Upon determining that no additional pings have been received, the first node enters the secondary startup state. Finally, the first node enters the active state, where the first node enters the active state as an initial node in a new cluster.

Systems and methods for reducing bandwidth loss in IPv6 packet switching networks. A network appliance is configured to sample IPv6 packets and mirror sampled packets to a working memory or memory structure, such as a queue. A transport layer payload is extracted from each sampled packet and a transport layer checksum validation operation is performed. Upon detecting an error, the network appliance updates a dropped packet rate or other metric.

A registrar entity, such as a service layer gateway, obtains the service capabilities requirements or preferences of a new registree entity, such as an application, and only accepts a registration of the registree if the registrar has sufficient remaining service capacities to meet the service capabilities requirements or preferences of the registree entity while ensuring that the provision of support to existing registree entities is not impacted. If the registrar lacks the capabilities to satisfy the requirements or preferences, it may contact a server to identify another registrar which has the capabilities. Updates to requirements or preference may originate at any node, e.g., at a user equipment device or a service.