Sap Se

Texas Instruments Corporation

Chen Feng

Xia Yu

Jian Liang

Baolin He

Kun Liu

Dabin Feng

Yao Lu

Shuna Ye

Xiansheng Sun

Yang Liu

Hui Li

Weicheng Zhang

Yangwei Yu

Yiliang Liu

Zichen Feng

A system associated with an enterprise microservice cloud computing environment may include a central API registry that contains API URL pattern-to-application mapping. A routing rule processor of an API gateway, coupled to the central API registry, may receive a first request (including a first request API URL) for a first user API call. Based on the first request API URL, the central API registry may be queried to determine an associated first application instance. The first request may then be routed to the first application instance to process the first user API call. A second request for a second user API call, including a second request API URL may be received. Based on the second request API URL, the central API registry may be queried to determine an associated second application instance, and the second request may be routed to the second application instance.

Extensible method to decouple API and service provider

According to some embodiments, methods and systems may provide request governance in a multi-tenancy cloud computing environment of an enterprise. A default cluster and a quarantine cluster may each execute application servers, and an automated quarantine enterprise configuration may store automatically managed tenant identifiers. An automated quarantine manager may automatically determine which tenant identifiers are stored in the automated quarantine enterprise configuration (e.g., based on a dynamic sliding time window). The automated quarantine manager may receive a tenant request from a client and arrange for the received tenant request to be executed by an application server in either the default cluster or the quarantine cluster in accordance with an associated tenant identifier in the automated quarantine enterprise configuration.

Systems and methods for request governance in multi-tenancy cloud architecture

In described examples, a boost converter includes an inductor, a voltage input, a current regulator, an intermediate node, a transistor, and a regulation circuit. The inductor has first and second terminals. The voltage input provides an input voltage, and is coupled to the first inductor terminal. The current regulator has current regulator input and output. The current regulator input is coupled to the second inductor terminal. The current regulator allows current to flow from the current regulator input to the current regulator output, and not vice versa. The intermediate node provides a node voltage. The transistor includes a source, a drain, and a gate. The drain is coupled to the current regulator output via the intermediate node. The regulation circuit includes a first regulation input coupled to receive the input voltage, a second regulation input coupled to the intermediate node, and a regulation output coupled to the gate.

Output regulated boost converter

Methods, systems, and computer-readable storage media for receiving a request through a web services API, the request comprising a query to query a database system, retrieving a set of weights that is specific to the web services, determining a factor score for each impact factor in a set of impact factors to provide a set of factor scores, providing a score total for the query based on the set of weights and the set of factor scores, returning a score response including the total score and at least one query suggestion, and receiving a modified request through the web services API, the modified request including the query modified to include at least a portion of the at least one query suggestion.

Protecting cloud systems using request scores

Methods, systems, and computer-readable storage media for adaptive application server request balancing. An example method includes receiving, from a load balancer, an application request for a first application at a first application server. In response to determining that a complexity value for the application request is greater than a complexity value threshold and that an occupancy value for the first application server is greater than an occupancy value threshold, the application request is provided to a global task queue that is accessible by the first application server and other application servers. A notification is received from a second application server of a completion of the application request by the second application server. A completion result of the completion of the application request by the second application server is retrieved from a global results queue and the completion result is provided to the first application in response to the application request.

Adaptive application server request balancing

A circuit includes a control circuit having a first control circuit input, a second control circuit input, a first control circuit output, and a second control circuit output, and a first transistor having a first current terminal, a second current terminal, and a control terminal, the control terminal coupled to the first control circuit output, the first current terminal coupled to the first control circuit input and to a second transistor, and the second current terminal adapted to be coupled to the second transistor, a logic circuit having a first logic input, a second logic input, and a logic output, the first logic input coupled to the second control circuit output and a switch having a first switch terminal, a second switch terminal, and a switch control terminal, the switch control terminal coupled to the logic output and the first switch terminal coupled to the second current terminal.

Voltage converter with average input current control and input-to-output isolation

A boost converter that provides a wide average current limiting range includes a switch coupled to an inductor output and a power input, a diode coupled to the inductor output and an output terminal load and configured to conduct current in only one direction away from the inductor output and toward the output terminal, a clamp circuit coupled to the diode and the switch, and a minimum time off module coupled to the diode and the switch. The clamp circuit is configured to clamp an inductor output current to a reference current while the converter is operating in a continuous conduction mode (CCM) of operation. The minimum time off module is configured to cause the inductor output current to be zero for at least a time Twhile the converter is operating in a pulse frequency modulation (PFM) mode of operation.

Boost converter with wide average current limiting range

Systems and methods provide reception of a call to a first function, determination of a first configuration file associated with the first function, the first configuration file indicating a primary function, a secondary function and a relationship between a first property of the primary function and a second property of the secondary function, calling of the primary function and reception of a corresponding first result set, calling of the secondary function, the call to the secondary function including a filter on the second property based on values of the first result set associated with the first property, reception of a second result set corresponding to the call to the secondary function, generation of a composed result set based on the first result set, the second result set, and the relationship, and return of the composed result set in response to the call to the first function.

System to facilitate transition to microservices

A voltage converter having a voltage input and a voltage output, the voltage converter including a first and second transistors and an average current control circuit. The first transistor has a first control input, a first current terminal, and a second current terminal. The first current terminal is adapted to be coupled to a switch node. The second transistor has a second control input, a third current terminal, and a fourth current terminal. The third current terminal is adapted to be coupled to an inductor. The average current control circuit is coupled to the third current terminal and the fourth current terminal. The average current control circuit is configured to determine an average current level of current flowing through the second transistor and to control a voltage on the first control input of the first terminal based on the determined average current level.

Techniques are described for managing the optimized refreshing of metadata associated with online and live systems. In some implementations, a set of metadata modules associated with one or more entities are identified, the metadata modules defining metadata associated with a particular data model for the associated entities. A request to initiate a refreshing of the metadata for a subset of the set of metadata modules is identified. Each metadata module from the subset of the set of metadata modules is prioritized into a prioritization order. A determination is made as to whether two or more idle database connections are available. In response to determining that two or more idle database connections are available, a concurrent refresh of the subset of the set of metadata modules is initialized in the prioritization order.

Adaptive metadata refreshing

A voltage regulator circuit includes a first transistor, an inductor, and a diode. The inductor connects to the diode at a switch node. The voltage converter produces an output voltage that is larger than an input voltage. The first transistor has on and off states and electrically couples a node to ground when in the on state. An error amplifier circuit generates an error signal based on a difference between a reference voltage and a voltage indicative of the output voltage. The error signal causes the first transistor to transition from the on to the off state. An adaptive off-time generator circuit couples to the input voltage node, and generates a signal to cause the first transistor to transition from the off to the on state. The time the first transistor is in the off state is inversely proportional to the time the first transistor is in the on state.

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Shanghai, China

Chen Feng