Contents
- 1 How many requests can a WCF service handle?
- 2 What is throttling in the context of WCF service?
- 3 What is default concurrency mode in WCF?
- 4 What are the different instance modes in WCF?
- 5 What is the default Maxconcurrentsessions?
- 6 What is default instance mode in WCF?
- 7 What’s the default value for the connection limit?
- 8 What is the max number of service instances that can be executed at the same time?
How many requests can a WCF service handle?
one request
WCF service can handle one request at a time.
What is throttling in the context of WCF service?
Throttling in WCF is used to limit the service throughput so that the resource consumption (memory, processor, disk, network, etc.) in the system is at an acceptable level, i.e., ensure the service doesn’t consume resources beyond acceptable limits.
How can you set the throttling property in web config?
In throttling, you can specify it in two ways: in the app. config file of the Service or you can specify it at the hosting time programmatically….
- maxConcurrentCalls=”2″
- maxConcurrentInstances=”2”
- maxConcurrentSessions=”2″
What is service in WCF?
Windows Communication Foundation (WCF) is a framework for building service-oriented applications. A service endpoint can be part of a continuously available service hosted by IIS, or it can be a service hosted in an application. An endpoint can be a client of a service that requests data from a service endpoint.
What is default concurrency mode in WCF?
By default the concurrency is single so the same thread is used to service all five requests which are sent from the WCF client side. You can see the value of the thread is always 4. The most important factor is time. As concurrency is configured as single, it will be called one after another sequentially.
What are the different instance modes in WCF?
The WCF framework has defined the following three Instance Context modes: PerCall, PerSession, and Single.
Can you explain transactions in WCF?
WCF – Transactions. A transaction in WCF is a set of operations that follow some properties, collectively known as ACID. Here, if a single operation fails, the entire system fails automatically. When an order is placed online, a transaction takes place.
What is concurrency mode in WCF?
Concurrency is the control of multiple threads active in an InstanceContext at any given time. WCF concurrency will help us to configure how WCF service instances can serve multiple requests at the same time. There are three basic types of concurrency supported by WCF 4.0: Single Concurrency Mode.
What is the default Maxconcurrentsessions?
The default is 16 * processor count. maxConcurrentInstances. A positive integer that limits the number of InstanceContext objects that execute at one time across a ServiceHost. Requests to create additional instances are queued and complete when a slot below the limit becomes available.
What is default instance mode in WCF?
Per-call service is the default instance activation mode of WCF. When a WCF service is configured for a per-call service, a CLR object is created for the timespan a client call or request is in progress.
What is the default size of a WCF buffer?
WCF configuration default limits, concurrency and scalability. The default is 524,288 bytes (512 * 1024 = 0x80000 = 512Kb). An integer value that specifies the maximum size, in bytes, of a buffer that stores messages while they are processed for an endpoint configured with this binding.
What kind of quotas are available in WCF?
This section describes the transport quotas available for the standard WCF transports: HTTP (S), TCP/IP, and named pipes. Custom transports can expose their own configurable quotas not included in this list. Consult the documentation for a custom transport to find out about its quotas.
What’s the default value for the connection limit?
The default value is 10. The service will accept connections in excess of the limit, but only the channels below the limit are active (messages are read from the channel). These configuration parameters can also be configured by code using the ServiceThrottlingBehavior configuration.
What is the max number of service instances that can be executed at the same time?
The default value is 16. Calls in excess of the limit are queued. configuration/system.serviceModel/behaviors/serviceBehaviors/behavior/serviceThrottling/@maxConcurrentInstances: defines the maximum number of service instances that can execute at the same time.