Scheduler agent supervisor pattern

This Azure cloud architecture pattern diagram template was created on the base of figure in the article "Scheduler Agent Supervisor Pattern" from the Microsoft Developer Network (MSDN) website.
"Scheduler Agent Supervisor Pattern.
Coordinate a set of actions across a distributed set of services and other remote resources, attempt to transparently handle faults if any of these actions fail, or undo the effects of the work performed if the system cannot recover from a fault. This pattern can add resiliency to a distributed system by enabling it to recover and retry actions that fail due to transient exceptions, long-lasting faults, and process failures. ...
An application performs tasks that comprise a number of steps, some of which may invoke remote services or access remote resources. The individual steps may be independent of each other, but they are orchestrated by the application logic that implements the task.
Whenever possible, the application should ensure that the task runs to completion and resolve any failures that might occur when accessing remote services or resources. ...
If the application detects a more permanent fault from which it cannot easily recover, it must be able to restore the system to a consistent state and ensure integrity of the entire end-to-end operation. ...
The Scheduler Agent Supervisor pattern defines the following actors. These actors orchestrate the steps (individual items of work) to be performed as part of the task (the overall process):
- The Scheduler arranges for the individual steps that comprise the overall task to be executed and orchestrates their operation. ...
- The Agent contains logic that encapsulates a call to a remote service, or access to a remote resource referenced by a step in a task. ...
- The Supervisor monitors the status of the steps in the task being performed by the Scheduler. ...
The Scheduler, Agent, and Supervisor are logical components and their physical implementation depends on the technology being used." [msdn.microsoft.com/ ru-RU/ library/ dn589780.aspx]
The Azure cloud system architecture diagram template "Scheduler agent supervisor pattern" for the ConceptDraw PRO diagramming and vector drawing software is included in the Azure Architecture solutin from the Computer and Networks area of ConceptDraw Solution Park.

The vector stencils library "AWS Security, Identity and Compliance" contains 23 Amazon Web Services icons: AWS Directory Service, AWS Config, AWS CloudTrail, AWS Trusted Advisor, Amazon CloudWatch, Alarm. Use it to draw AWS architecture diagrams of your cloud infrastructure services.
"The AWS infrastructure puts strong safeguards in place to help protect customer privacy. All data is stored in highly secure AWS data centers. ...
AWS manages dozens of compliance programs in its infrastructure. This means that segments of your compliance have already been completed. ...
Cut costs by using AWS data centers. Maintain the highest standard of security without having to manage your own facility. ...
Security scales with your AWS cloud usage. No matter the size of your business the AWS infrastructure is designed to keep data safe." [aws.amazon.com/ security/ ]
The symbols example "AWS Security, Identity and Compliance - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the AWS Architecture Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

The vector stencils library "Advertising" contains 8 advertising icons.
Use it to design your business and finance illustrations and infographics with ConceptDraw PRO diagramming and vector drawing software.
The vector stencils library "Advertising" is included in the Business and Finance solution from the Illustration area of ConceptDraw Solution Park.

This finite state machine diagram example was redesigned from the Wikimedia Commons file: SdlStateMachine.png. [commons.wikimedia.org/ wiki/ File:SdlStateMachine.png]
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. [creativecommons.org/ licenses/ by-sa/ 3.0/ deed.en]
"Behavior.
Each process agent is a state machine that contributes to the action carried out by the system. A message stimulus coming from the environment or from another agent to an agent is called a signal. Signals received by a process agent are first placed in a queue (the input port). When the state machine is waiting in a state, if the first signal in the input port is enabled for that state it starts a transition leading to another state. Transitions can output signals to other agents or to the environment. A process agent is allowed to contain procedure types so that the same actions can be invoked from different places. It is also allowed to call a remote procedure type to invoke a procedure in another agent (or even another system) and wait for a response." [Specification and Description Language. Wikipedia]
The example "SDL diagram - State Machine" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Specification and Description Language (SDL) solution from the Engineering area of ConceptDraw Solution Park.

The vector stencils library "Fire safety equipment" contains 19 clipart images of fire safety equipment which you can easy use in your presentations and illustrations.
"Fire safety refers to precautions that are taken to prevent or reduce the likelihood of a fire that may result in death, injury, or property damage, alert those in a structure to the presence of an uncontrolled fire in the event one occurs, better enable those threatened by fire to survive in and evacuate from affected areas, or to reduce the damage caused by a fire. Fire safety measures include those that are planned during the construction of a building or implemented in structures that are already standing, and those that are taught to occupants of the building.
Threats to fire safety are referred to as fire hazards. A fire hazard may include a situation that increases the likelihood a fire may start or may impede escape in the event a fire occurs." [Fire safety. Wikipedia]
The clip art example "Fire safety equipment - Vector stencils library" was created in the ConceptDraw PRO diagramming and vector drawing software using the Presentation Clipart solution from the Illustration area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ illustrations-presentation-clipart

The vector stencils library "Advertising" contains 8 marketing communication icons.
Use it to design your business and finance illustrations and infographics with ConceptDraw PRO diagramming and vector drawing software.
"Advertising is a form of marketing communication used to promote or sell something, usually a business's product or service. Advertising by a government in favor of its own policies is often called propaganda." [Advertising. Wikipedia]
The icon set example "Design elements - Advertising" is included in the Business and Finance solution from Illustration area of ConceptDraw Solution Park.

This IVR diagram example depicts the IVR balance recharge.
"IVR systems are typically intended to service high call volumes, reduce cost and improve the customer experience. Examples of typical IVR applications are telephone banking, televoting, and credit card services. Companies also use IVR services to extend their business hours to 24/ 7 operation. The use of IVR and voice automation allows callers' queries to be resolved without the need for queueing and incurring the cost of a live agent. If callers do not find the information they need or require further assistance, their calls are often transferred to an agent. This makes for a more efficient system in which agents have more time to deal with complex interactions. The agents do not deal with basic inquiries that require yes/ no responses or obtaining customer details. ...
Other common IVR services include:
(1) Mobile — Pay-As-You-Go account funding; registration; mobile purchases, such as ring tones and logos;
(2) Banking — balance, payments, transfers, transaction history;
(3) Retail & Entertainment — orders, bookings, credit & debit card payments;
(4) Utilities — meter readings; account look-up, history and balance, payment, consumption history;
(5) Travel — ticket booking, flight information, check-in;
(6) Weather forecasts, water, road and ice conditions." [Interactive voice response. Wikipedia]
The IVR diagram example "IVR balance recharge" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Interactive Voice Response Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.