Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for security analysis are provided. One of the methods includes: determining a data risk value for data of an endpoint based on a number of classified files within the data and a type of classified files within the data; determining an endpoint risk value for the endpoint based on a user risk value and a cyber security risk value; determining a channel risk value for a set of channels through which the data is conveyable by the endpoint based on a number of channels within the set of channels and a type of channels within the set of channels; and rendering a map showing a security risk level of the endpoint, wherein the security risk level is based on the data risk value, the endpoint risk value, and the channel risk value.

Abstract: In accordance with embodiments, there are provided mechanisms and methods for facilitating dynamic hierarchical management of queue resources in an on-demand services environment in a multi-tenant environment according to one embodiment. In one embodiment and by way of example, a method includes assigning, in runtime, by the database system, weights to at least one of a plurality of tenants and a plurality of message types. The assigned weights are capable of being dynamically scaled, in runtime, based on one or more factors. The method may further include allocating, in runtime, by the database system, resources to one or more of the plurality of tenants and one or more of the plurality of message types based on their assigned one or more weights of the weights. The allocated resources are capable of being dynamically modified, in runtime, based on scaling of the assigned weights.

Abstract: A system may identify gap events in a change detection stream. When changes in data are transmitted to a downstream system, the system may identify intermittent portions of the transmission where data is missing (e.g., a gap event). In some examples, a gap event may be caused by system maintenance or one or more system errors. After identifying the gap event, the system may bridge the gap event using metadata associated with the gap event. The associated metadata may be transmitted (e.g., via a gap event identification message) to the downstream system, which may prevent the downstream system from experiencing computational inefficiencies due to the gap event.

Abstract: Migration specific action requests to perform a set of migration specific actions are sent from a source system instance to a target system instance. Migration specific action responses are received from the target system instance. Based on the migration specific action responses, traffic lights for resource utilization of the target system instance are determined. Based on the traffic lights, a concurrency limit is determined for the specific time. The concurrency limit is applied to scale a total number of ongoing migration specific actions to be requested of the target system instance at the specific time.

Abstract: A request for an organization migration to move application data and application services of an organization hosted at a source system instance in a multi-tenant computing system to a target system instance in the multi-tenant computing system is received. Based on operational parameters, a time window is selected to execute the organization migration. Computing resource usages of one or both of the source and target system instances in the selected time window are monitored. If computing resources are available, the organization migration is enqueued.

Abstract: Migration configuration data for an organization migration to move application data and application services of a to-be-migrated organization hosted at a source system instance to a target system instance is received. Migration components respectively representing to-be-migrated systems of record in a to-be-migrated organization are registered. In response to receiving an instruction to enter a specific organization migration state, migration steps for each migration component in the migration components are identified for execution in the specific organization migration state. Each migration component in the migration components automatically executes migration steps determined for each such migration component for execution in the specific organization migration state.

Abstract: Techniques are disclosed relating to processing data stored within database tables in a parallelized manner. In various embodiments, a computer system maintains a database having a database table storing data for a plurality of tenants and an index structure storing indexes for accessing data stored in the database table. In some embodiments, the computer system receives, from a particular tenant, a request to perform a task that includes operating on particular data. In some embodiments, the computer system determines a portion of the index structure corresponding to the particular tenant and divides a range of indexes within that portion into a plurality of index sub-ranges. In various embodiments, the computer system processes portions of the task in parallel by determining an index sub-range for each of a plurality of threads and causing each of the threads to operate on a portion of the particular data specified by its index sub-range.

Abstract: A mobile-type maintenance square-shaped bin including a bin body, a travelling mechanism provided under the bin body, a car head connected with one end of the bin body, an inlet and an outlet provided at the other end of the bin body, a sealed door provided on the inlet and the outlet, an allocation and transportation device mutually connected with a microcomputer signal provided at a front end of the bin body as well as provided over an internal portion of the bind body, an maintenance platform provided at a bottom of the internal portion of the bin body, a tool platform provided adjacently to the maintenance platform, an ash-removal mechanism provided at an upper portion of the maintenance platform, an air-conditioning device provided at an outer portion of the bin body, and a scanning mechanism provided at a front portion of the maintenance platform.

Abstract: In accordance with embodiments, there are provided mechanisms and methods for facilitating an auction-based fair allocation and usage of thread resources for user messages according to one embodiment in an on-demand services environment. In one embodiment and by way of example, a method includes receiving job requests and bids from a plurality of organizations over a network, where each job request and the corresponding bid is placed by a user associated with an organization having a resource currency value within a multi-tenant database system via a user interface at a computing device over the network, determining resource currency values associated with pending jobs relating to the plurality of organizations, wherein the resource currency values corresponds to resources dedicated to the pending jobs, and performing an auction of the received bids for resources that are not dedicated and remains available for purchase, where a bid includes a purchase request to purchase the available resources.

Abstract: In accordance with embodiments, there are provided mechanisms and methods for facilitating tiered service model-based fair allocation of resources for application servers in multi-tenant environments. In one embodiment and by way of example, a method includes collecting, by and incorporating into the database system, data relating to job types associated with one or more tenants of a plurality of tenants within a multi-tenant database system, computing, based on the data, an actual resource use and an expected resource allocation associated with each job type, and assigning classifications to the job types based on their corresponding actual resource use and the expected resource allocation. The method may further include routing the job types between tiers based on the assigned classifications, where the routing includes at least one of promoting, demoting, and maintaining one or more tiers for the job types.

Abstract: In accordance with embodiments for facilitating action-based fair allocation and usage of thread resources, and by way of example, a method includes receiving job requests and bids from organizations over a network, where each job request and the corresponding bid is placed by a user associated with an organization having a resource currency value within a multi-tenant database system, determining resource currency values associated with pending jobs relating to the organizations, wherein the resource currency values corresponds to resources dedicated to the pending jobs, performing an auction of the received bids for resources that are not dedicated and remains available for purchase, where a bid includes a purchase request to purchase the available resources, prioritizing the job requests based on the dedicated resources and the auction of the available resources, and processing the job requests based on the prioritized job requests.

Abstract: A messaging system implements messaging among application servers and databases, utilizing other servers that implement messaging brokers. A large flood of incoming messages can bring down messaging brokers by overflowing the message queues, negatively impacting performance of the overall system. This disclosure in some embodiments detects and identifies “flooders” in a timely manner and isolates their message traffic to dedicated queues to avoid impacting other system users. Subsequently, a preferred system de-allocates the queues and returns the messaging system to normal operation when flooding conditions subside, and “sweeps” up any remaining orphan messages.

Abstract: Embodiments regard transparent sharding of traffic across messaging brokers. An embodiment of a method of sharding message traffic across messaging brokers includes providing a message sharding service for message sharding among a plurality of registered message brokers, wherein providing the message sharding service includes applying a current message sharding strategy; and sharding messages among the registered message brokers according to the current message sharding strategy, including registering the message brokers and assigning message queues to registered message brokers according to the current message sharding strategy; wherein the current message sharding strategy is one of a plurality of message sharding strategies.

Abstract: The present invention provides a terminal which includes a program determining unit configured to determine at least one associated application program corresponding to a designated contact person in an address book of the terminal, and a displaying unit configured to simultaneously display head portraits of the designated contact person in the address book and the at least one associated application program under the condition that the address book or a designated interface provided by any of the at least one associated application program is displayed. The present invention further provides a processing method for head portraits of a contact person.

Abstract: A mobile-type maintenance square-shaped bin including a bin body, a travelling mechanism provided under the bin body, a car head connected with one end of the bin body, an inlet and an outlet provided at the other end of the bin body, a sealed door provided on the inlet and the outlet, an allocation and transportation device mutually connected with a microcomputer signal provided at a front end of the bin body as well as provided over an internal portion of the bind body, an maintenance platform provided at a bottom of the internal portion of the bin body, a tool platform provided adjacently to the maintenance platform, an ash-removal mechanism provided at an upper portion of the maintenance platform, an air-conditioning device provided at an outer portion of the bin body, and a scanning mechanism provided at a front portion of the maintenance platform.

Abstract: Embodiments regard transparent sharding of traffic across messaging brokers. An embodiment of a method of sharding message traffic across messaging brokers includes providing a message sharding service for message sharding among a plurality of registered message brokers, wherein providing the message sharding service includes applying a current message sharding strategy; and sharding messages among the registered message brokers according to the current message sharding strategy, including registering the message brokers and assigning message queues to registered message brokers according to the current message sharding strategy; wherein the current message sharding strategy is one of a plurality of message sharding strategies.

Abstract: Techniques and architectures for workload management. A stream of messages is received with servers coupled to provide access to shared system resources. The servers are organized as at least two groups with a first group providing message queuing services and a second group providing message queuing services under first conditions and modified message queuing services under second conditions. Message queuing services are provided with the first group by treating all jobs as equal, processing jobs asynchronously and processing jobs in the background to defer to foreground, non-message queuing services, jobs. Message queuing services are provided with the second group by treating all jobs as equal, processing jobs asynchronously and processing jobs in the background to defer to foreground, non-message queuing services, jobs under the first conditions. Modified message queuing services are provided with the second group by shortest-slack-first scheduling under the second conditions.

Abstract: A messaging system implements messaging among application servers and databases, utilizing other servers that implement messaging brokers. A large flood of incoming messages can bring down messaging brokers by overflowing the message queues, negatively impacting performance of the overall system. This disclosure in some embodiments detects and identifies “flooders” in a timely manner and isolates their message traffic to dedicated queues to avoid impacting other system users. Subsequently, a preferred system de-allocates the queues and returns the messaging system to normal operation when flooding conditions subside, and “sweeps” up any remaining orphan messages.

Abstract: A messaging system implements messaging among application servers and databases, utilizing other servers that implement messaging brokers. A large flood of incoming messages can bring down messaging brokers by overflowing the message queues, negatively impacting performance of the overall system. This disclosure in some embodiments detects and identifies “flooders” in a timely manner and isolates their message traffic to dedicated queues to avoid impacting other system users. Subsequently, a preferred system de-allocates the queues and returns the messaging system to normal operation when flooding conditions subside, and “sweeps” up any remaining orphan messages.

Abstract: In accordance with embodiments, there are provided mechanisms and methods for facilitating a fair allocation and usage of thread resources for user messages according to one embodiment in an on-demand services environment. In one embodiment and by way of example, a method includes tracking resource usage associated with a plurality of messages performed and completed in response to requests placed by a user via a user interface at a computing device, where the tracking includes recording an amount of resources consumed by each completed message. The method may further include classifying the plurality of messages into job types based on the tracked resource usage associated with the plurality of messages, and enforcing, based on the classification of the messages, a message selection process to ensure equitable distribution of resources to subsequently received messages.