Methods, devices, and systems for management of a cloud computing environment for use by a software application. The cloud computing environment may be an N-tier environment. Multiple cloud providers may be used to provide the cloud computing environment.

Cloud Computing Lifecycle Management for N-Tier Applications

In general, the present invention relates to a virtual platform in which one or more distributed virtual switches can be created for use in virtual networking. According to some aspects, the distributed virtual switch according to the invention provides the ability for virtual and physical machines to more readily, securely, and efficiently communicate with each other even if they are not located on the same physical host and/or in the same subnet or VLAN. According other aspects, the distributed virtual switches of the invention can support integration with traditional IP networks and support sophisticated IP technologies including NAT functionality, stateful firewalling, and notifying the IP network of workload migration. According to further aspects, the virtual platform of the invention creates one or more distributed virtual switches which may be allocated to a tenant, application, or other entity requiring isolation and/or independent configuration state. According to still further aspects, the virtual platform of the invention manages and/or uses VLAN or tunnels (e.g, GRE) to create a distributed virtual switch for a network while working with existing switches and routers in the network. The present invention finds utility in both enterprise networks, datacenters and other facilities.

Method and apparatus for implementing and managing virtual switches

Systems and methods for managing a network are described. A view of current state of the network is maintained where the current state of the network characterizes network topology and network constituents, including network entities and network elements residing in or on the network. Events are announced that correspond to changes in the state of the network and one or more network elements can be configured accordingly. Methods for managing network traffic are described that ensure forwarding and other actions taken by network elements implement globally declared network policy and refer to high-level names, independently of network topology and the location of network constituents. Methods for discovering network constituents are described, whereby are automatically configured. Routing may be performed using ACL and packets can be intercepted to permit host to continue in sleep mode. The methods are applicable to virtual environments.

Network operating system for managing and securing networks

A remote browsing process is directed to the generation and management of a remote persistent browsing context at a network computing provider. A client computing device requests a remote persistent browsing context instance at a network computing provider. The network computing provider provides processing results corresponding to processed representations of requested content to the client computing device. The persistent browsing context may be maintained at the network computing provider subsequent to the user ending his interaction with the browser application at the client device. A client computing device may subsequently request access to the persistent browsing context maintained at the network computing and storage device.

Remote browsing session management

Operating profiles for consumers of computing resources may be automatically determined based on an analysis of actual resource usage measurements and other operating metrics. Measurements may be taken while a consumer, such as a virtual machine instance, uses computing resources, such as those provided by a host. A profile may be dynamically determined based on those measurements. Profiles may be generalized such that groups of consumers with similar usage profiles are associated with a single profile. Assignment decisions may be made based on the profiles, and computing resources may be reallocated or oversubscribed if the profiles indicate that the consumers are unlikely to fully utilize the resources reserved for them. Oversubscribed resources may be monitored, and consumers may be transferred to different resource providers if contention for resources is too high.

Automated profiling of resource usage

Techniques are described for managing the execution of programs on a plurality of computing systems, such as computing systems organized into multiple groups. A program execution service manages the program execution on behalf of multiple customers or other users, and selects appropriate computing systems to execute one or more instances of program, such as based in part on locations of one or more previously stored copies of the program from which copies of the program to execute may be acquired. For example, in some situations the selection of an appropriate computing system to execute an instance of a program is based in part on physical or logical proximity to other resources, such as stored copies of the program, executing copies of the program, and/or available computing systems.

Managing execution of programs by multiple computing systems

Method and dsystem for managing execution of programs

A database system may include a database service and a separate distributed storage service. The database service (or a database engine head node thereof) may be responsible for query parsing, optimization, and execution, transactionality, and consistency, while the storage service may be responsible for generating data pages from redo log records and for durability of those data pages. For example, in response to a write request directed to a particular data page, the database engine head node may generate a redo log record and send it, but not the data page, to a storage service node. The storage service node may store the redo log record and return a write acknowledgement to the database service prior to applying the redo log record. The server node may apply the redo log record and other redo log records to a previously stored version of the data page to create a current version.

Database system with database engine and separate distributed storage service

A log-structured data store may implement optimized log storage for asynchronous log updates. In some embodiments, log records may be received indicating updates to data stored for a storage client and indicating positions in a log record sequence. The log records themselves may not be guaranteed to be received according to the log record sequence. Received log records may be stored in a hot log portion of a block-based storage device according to an order in which they are received. Log records in the hot log portion may then be identified to be moved to a cold log portion of the block-based storage device in order to complete a next portion of the log record sequence. Log records may be modified, such as compressed, or coalesced, before being stored together in a data block of the cold log portion according to the log record sequence.

Optimized log storage for asynchronous log updates

A system for allocating constrained resources (e.g., downstream services, execution threads, database connections, input/output channels, computational resources, and/or memory) to requested services that are dependent on those resources may include multiple resource queues, each of which maintains a queue of requests for a respective constrained resource, and multiple service request queues, from which requests may be subsequently serviced. As each request reaches the head of a resource queue, it may receive a resource token for a respective constrained resource. Once the request has collected resource tokens for each of the constrained resources on which it depends, the request may be passed to a service request queue that maintains a queue of requests of a particular type. Requests in the multiple service request queues may be serviced on a round-robin or weighted round-robin basis. The number of tokens available for each constrained resource may be modified based on observed system performance.

Benjamin Tobler

Papers

Managing execution of programs by multiple computing systems

Method and dsystem for managing execution of programs

Database system with database engine and separate distributed storage service

Optimized log storage for asynchronous log updates

System and method for allocating resources for heterogeneous service requests