CTS405 Connected Applications Choosing A Hosting Model Lance Olson Lead Program Manager Microsoft.

CTS405 Connected Applications Choosing A Hosting Model

CTS405 Connected Applications Choosing A Hosting Model

Lance OlsonLance OlsonLead Program ManagerLead Program ManagerMicrosoftMicrosoft

Connected Systems TrackConnected Systems TrackMon 10:45Mon 10:45 CTS200 Service Orientation and the Windows/.NET DeveloperCTS200 Service Orientation and the Windows/.NET Developer

Mon 1:30Mon 1:30 CTS300 Prescriptive Guidance-Juggling Web Services, WSE, .NET Remoting, CTS300 Prescriptive Guidance-Juggling Web Services, WSE, .NET Remoting, System.EnterpriseServices, and MSMQSystem.EnterpriseServices, and MSMQ

Mon 3:15Mon 3:15 CTS308 Applied Web Services in Hewlett Packard's Core eCommerce SolutionsCTS308 Applied Web Services in Hewlett Packard's Core eCommerce Solutions

Mon 5:00Mon 5:00 CTS404 Best Practices for Dealing With State at Multiple Layers Within CTS404 Best Practices for Dealing With State at Multiple Layers Within Your .NET ApplicationsYour .NET Applications

Tue 1:30Tue 1:30 DEVC27 Service Orientation OverviewDEVC27 Service Orientation Overview

Tue 3:15Tue 3:15 CTS301 Managed Programming for Win32 DevelopersCTS301 Managed Programming for Win32 Developers

Wed 2:00Wed 2:00 CTS302 Using Web Services Enhancements v2.0 (WSE) to Secure Web ServicesCTS302 Using Web Services Enhancements v2.0 (WSE) to Secure Web Services

Wed 10:15Wed 10:15 CTS400 Using Web Services Enhancements v2.0 for Messaging Over Multiple CTS400 Using Web Services Enhancements v2.0 for Messaging Over Multiple Machines and NetworksMachines and Networks

Wed 5:30Wed 5:30 CTS303 Applied Web Services at the Ohio State University Medical CenterCTS303 Applied Web Services at the Ohio State University Medical Center

Thur 8:30Thur 8:30 CTS403 Handling Errors with TransactionsCTS403 Handling Errors with Transactions

Thur 8:30Thur 8:30 DEVC35 Web Services InteroperabilityDEVC35 Web Services Interoperability

Thur 1:30Thur 1:30 CTS406 Versioning of Connected .NET ApplicationsCTS406 Versioning of Connected .NET Applications

Thur 1:30Thur 1:30 DEVC16 Distributed Applications Performance PanelDEVC16 Distributed Applications Performance Panel

Thur 5:00Thur 5:00 CTS304 Availability and Reliability - Failure Is Not An OptionCTS304 Availability and Reliability - Failure Is Not An Option

Fri 10:45 CTS405 Choosing a Hosting Model - Dealing with Threads, AppDomains, and Processes

Fri 1:00Fri 1:00 CTS306 Deployment and ManagementCTS306 Deployment and Management

Fri 2:45Fri 2:45 CTS307 Using Service Orientation to Drive Business ProcessesCTS307 Using Service Orientation to Drive Business Processes

Fri 9:00Fri 9:00 DEVC40 Versioning PanelDEVC40 Versioning Panel

Scope Of This TalkScope Of This Talk

In scope…Application executionIn scope…Application executionApplication execution “hosting” as Application execution “hosting” as defined by the process model, threading, defined by the process model, threading, and inherent application services and inherent application services

NOT in scope…Online “hosting” NOT in scope…Online “hosting” businessbusiness

““Hosting” as in application hosting via Hosting” as in application hosting via online sites, co-location, etc.online sites, co-location, etc.

AgendaAgenda

Running managed codeRunning managed code

Hosting environmentsHosting environments

Relating the connected technologiesRelating the connected technologies

Choosing the right modelChoosing the right model

Running Managed CodeRunning Managed Code

Managed Code BasicsManaged Code Basics

All managed code runs in an All managed code runs in an Operating System processOperating System processApplication Domains are Application Domains are the principal managed runtime the principal managed runtime environment environment

Types are loaded per-Application Types are loaded per-Application DomainDomainObject references are scoped Object references are scoped to domainto domainSecurity policy is per domainSecurity policy is per domain

An Operating System process may An Operating System process may host multiple Application Domainshost multiple Application DomainsThere is one default Application There is one default Application Domain per processDomain per process

ProcessProcess

Application DomainApplication Domain

TypeType TypeType TypeType





Before The 1st AppDomain…Before The 1st AppDomain…

The CLR is initialized from unmanaged code The CLR is initialized from unmanaged code via a calls into mscoree.dllvia a calls into mscoree.dll

_CorExeMain for managed EXEs_CorExeMain for managed EXEs

_CorDllMain for managed DLLs loaded _CorDllMain for managed DLLs loaded via LoadLibraryvia LoadLibrary

DllGetClassObject for REGASM’ed DLLsDllGetClassObject for REGASM’ed DLLs

CorBindToRuntimeEx et al for “explicit” hostsCorBindToRuntimeEx et al for “explicit” hosts

At most one instance of the CLR per processAt most one instance of the CLR per processOnly one version (e.g., 1.0, 1.1, Whidbey) Only one version (e.g., 1.0, 1.1, Whidbey)

Server (MP) versus Workstation (UP)Server (MP) versus Workstation (UP)

Concurrent GC process-wideConcurrent GC process-wide

Loader optimization settingsLoader optimization settings

The App Domain LifecycleThe App Domain Lifecycle

Each App Domain gets initialized with Each App Domain gets initialized with the followingthe following

.config XML doc (may be in memory).config XML doc (may be in memory)

Auxiliary properties (e.g., APPBASE, Auxiliary properties (e.g., APPBASE, shadow copy, search path)shadow copy, search path)

Security evidence for top-of-stack Security evidence for top-of-stack CASCAS

Assemblies get loaded and code gets Assemblies get loaded and code gets run using cross-domain remotingrun using cross-domain remoting

App Domain unloads and takes down App Domain unloads and takes down assemblies with itassemblies with it


Config SettingsConfig SettingsSecurity EvidenceSecurity EvidencePropertiesProperties

Assembly AAssembly A

Assembly BAssembly B

Hosting EnvironmentsHosting Environments

Hosting OverviewHosting Overview

What does your host do for you?What does your host do for you?Some things are clearSome things are clear

Process managementProcess management

ThreadingThreading

Application domainsApplication domains

But the details are not always obviousBut the details are not always obviousShould I use IIS, an NT service, or Should I use IIS, an NT service, or Enterprise Services?Enterprise Services?

Differences range from subtle to dramaticDifferences range from subtle to dramatic

Some hosts couple process model with Some hosts couple process model with environment and application servicesenvironment and application services


Manual process creationManual process creationManaged Console executableManaged Console executable

Windows FormsWindows Forms

Automatic process creationAutomatic process creationManaged Windows NT ServiceManaged Windows NT Service

Enterprise ServicesEnterprise Services

IIS/ASP.NETIIS/ASP.NET

Hosting In The ConsoleHosting In The Console

Basic usageBasic usageCommon simple test environmentCommon simple test environment

Great for basicGreat for basic batch-style execution batch-style execution

Free threaded environmentFree threaded environment

Loaded by Windows LoaderLoaded by Windows Loader

Code runs in the default Code runs in the default application domainapplication domain

TipsTipsExtremely simple – Extremely simple – No major surprisesNo major surprises

Batch-file level management and Batch-file level management and deploymentdeployment

Be aware of differences when using Be aware of differences when using the console to test your applicationthe console to test your application

App1.exeApp1.exe

Default App DomainDefault App Domain


Hosting In Windows FormsHosting In Windows Forms

Basic usageBasic usageRich local Windows UIRich local Windows UI

Front end to a multi-tiered Front end to a multi-tiered applicationapplication

Loaded by Windows LoaderLoaded by Windows Loader

Code runs in the default Code runs in the default application domainapplication domain

TipsTipsBe aware of the UI threadBe aware of the UI thread

Use control.BeginInvoke to Use control.BeginInvoke to marshal from IO threads to mainmarshal from IO threads to main

Management and deployment Management and deployment significantly improved significantly improved by ClickOnceby ClickOnce

See DEV364 presentationSee DEV364 presentation

App1.exeApp1.exe

Default App DomainDefault App Domain


Inspecting A Inspecting A Managed .EXEManaged .EXE


Manual process creationManual process creationManaged Console executableManaged Console executable

Windows FormsWindows Forms

Automatic process creationAutomatic process creationWindows NT ServiceWindows NT Service


IIS/ASP.NETIIS/ASP.NET

What Do They Do?What Do They Do?

Activation / startupActivation / startup

Process identityProcess identity

PoolingPooling

ManagementManagement

DebuggingDebugging

ShutdownShutdown

RecyclingRecycling

Starting The Application Enterprise ServicesStarting The Application Enterprise Services

On demand On demand or automaticor automatic

In process – LibraryIn process – Library

Out of proc – Server Out of proc – Server (Dllhost.exe)(Dllhost.exe)

Process instance or Process instance or NT serviceNT service

Dllhost.exe loads CLRDllhost.exe loads CLR

Code runs in default Code runs in default application domainapplication domain

DllHost.exeDllHost.exe

DCOM/RPCDCOM/RPC

App DomainApp Domain

Starting The Application ASP.NET / IIS 6.0Starting The Application ASP.NET / IIS 6.0

On demand start upOn demand start up

W3svc manages W3svc manages processesprocesses

Application runs in Application runs in w3wp.exe instancew3wp.exe instance

One app domain One app domain per applicationper application

Commonly the Commonly the virtual directory virtual directory

http://server.com/myapp1http://server.com/myapp1

W3SVCW3SVC

HTTP.SYSHTTP.SYS

kern

elke

rnel

W3WP.exeW3WP.exe

App App

DomainDomain

http://server.com/myapp1

Starting The Application NT ServicesStarting The Application NT Services

Automatic start upAutomatic start up

Application runs Application runs in service in service process instanceprocess instance

Manual, Auto, Disabled Manual, Auto, Disabled startup statestartup state

Specify service Specify service dependenciesdependencies

Default app domainDefault app domain

Multiple services Multiple services per processper process

Service Control ManagerService Control Manager

MyService.exeMyService.exe

App DomainApp Domain

Process IdentityProcess Identity

Generally the same feature set Generally the same feature set across all threeacross all three

Run under specified accountRun under specified account

Mark account as interactiveMark account as interactiveCommonly used for debuggingCommonly used for debugging

ASP.NET and Enterprise Services also ASP.NET and Enterprise Services also support caller impersonationsupport caller impersonation

Pooling ProcessesPooling Processes

Process PoolingProcess Pooling Process PinningProcess Pinning

Enterprise Enterprise ServicesServices

YesYes CoCreateInstance CoCreateInstance picks a process picks a process then sticks until then sticks until the client calls the client calls releaserelease

ASP.NET / IIS 6.0ASP.NET / IIS 6.0 YesYes First request gets First request gets round robin, then round robin, then sticks based on sticks based on the connectionthe connection

NT ServicesNT Services NoNo n/an/a

Pooling Application DomainsPooling Application Domains

Enterprise ServicesEnterprise ServicesOne app domain per COM+ applicationOne app domain per COM+ application

One COM+ application per processOne COM+ application per process

ASP.NET / IIS 6.0ASP.NET / IIS 6.0One application domain per IIS applicationOne application domain per IIS application

Many applications per processMany applications per processGet more applications running on the boxGet more applications running on the box

Be aware that applications in the same process must Be aware that applications in the same process must “play well” together“play well” together

NT ServicesNT ServicesOne application domain per processOne application domain per process

Services share the same application domainServices share the same application domain

Pooling ThreadsPooling Threads

Enterprise ServicesEnterprise ServicesOperating System completion port Operating System completion port thread poolthread pool

Limited only by contentionLimited only by contention

ASP.NET / IIS 6.0ASP.NET / IIS 6.0Managed CLR thread poolManaged CLR thread pool

Limited to 20 completion port and 20 Limited to 20 completion port and 20 worker threads per CPU by defaultworker threads per CPU by default

NT ServicesNT ServicesN/AN/A

Request QueuingRequest Queuing

Enterprise ServicesEnterprise ServicesSatisfy all requests eventuallySatisfy all requests eventually

Requests aren’t queued unless you’re Requests aren’t queued unless you’re explicitly using a queuing technologyexplicitly using a queuing technology

Geared towards short and long-lived Geared towards short and long-lived application operationsapplication operations

STA components change everythingSTA components change everythingE.g. VB 6 codeE.g. VB 6 code

Request QueuingRequest Queuing

ASP.NET / IIS 6.0ASP.NET / IIS 6.0Satisfy the majority of requests as quickly as Satisfy the majority of requests as quickly as possiblepossible

Requests are given a time limit to complete workRequests are given a time limit to complete work

Requests are queued once the thread pool limit is Requests are queued once the thread pool limit is reachedreached

Once queue limit is reached requests are rejectedOnce queue limit is reached requests are rejected

Geared towards serving up application UIGeared towards serving up application UI

NT ServicesNT ServicesNone provided by the environmentNone provided by the environment

Managing ProcessesManaging Processes

HealthHealth Command and Command and ControlControl

InspectionInspection


Through COM+ System Through COM+ System ApplicationApplication

Start, stop, pause, Start, stop, pause, resume, enable, disableresume, enable, disable

Process dumpProcess dump

Enumerate Enumerate running processes, running processes, classes, classes, transactionstransactions

ASP.NET ASP.NET IIS 6.0IIS 6.0

Process and app Process and app domain level “ping”domain level “ping”

Failure triggersFailure triggers

Start, stop, pause, Start, stop, pause, resumeresume

View running View running processesprocesses

NT NT ServicesServices

Failure triggers Failure triggers Start, stop, pause, Start, stop, pause, continuecontinue

Execute custom Execute custom commandscommands

Enumerate Enumerate servicesservices

Debugging ProcessesDebugging Processes

Enterprise ServicesEnterprise ServicesMemory dumpMemory dump

On failure or on demandOn failure or on demand

Launch in debugger on failureLaunch in debugger on failure

ASP.NET / IIS 6.0ASP.NET / IIS 6.0Put process in “orphan” mode on failure Put process in “orphan” mode on failure for debuggingfor debugging

NT ServicesNT ServicesAttach directly to debugAttach directly to debug

RecyclingRecycling

Time Time LapsedLapsed

MemoryMemory Req. Req. BasedBased

IdleIdle Activation Activation CountCount

ScheduledScheduled


YesYes YesYes YesYes YesYes YesYes NoNo

ASP.NET ASP.NET IIS 6.0IIS 6.0

Yes Yes YesYes YesYes YesYes NoNo YesYes

NT NT ServicesServices

N/AN/A

Inspecting Automatic Inspecting Automatic Process Creation Process Creation EnvironmentsEnvironments

Relating Connected Technologies

Relating Connected Technologies

Does The Host Care?Does The Host Care?

Some care about the hostSome care about the hostExposing Web Services in .ASMXExposing Web Services in .ASMX

WSE 1.0WSE 1.0

Others don’tOthers don’tSystem.NetSystem.Net

System.MessagingSystem.Messaging

Does The Host Care?Does The Host Care?

Others VaryOthers Vary

.NET Remoting .NET Remoting In your process, an NT Service, or in IISIn your process, an NT Service, or in IIS

Enterprise Services Enterprise Services In your process, an NT Service, or DllhostIn your process, an NT Service, or Dllhost

WSE 2.0 WSE 2.0 HTTP requires ASP.NETHTTP requires ASP.NET

TCP in your process or an NT ServiceTCP in your process or an NT Service

Most Common IssuesMost Common Issues

Long-lived operations in Long-lived operations in ASP.NET / IIS 6.0ASP.NET / IIS 6.0

Consider using queuesConsider using queuesDatabaseDatabase


System.MessagingSystem.Messaging

ASP.NET services coupled ASP.NET services coupled with hostingwith hosting

Mixing the technologiesMixing the technologies““Don’t give me multiple models!”Don’t give me multiple models!”

Choosing The Right ModelChoosing The Right Model

Hosting With ASP.NET / IIS 7Hosting With ASP.NET / IIS 7

ComponentizationComponentization

Protocol independent activationProtocol independent activation

Decouple services from hosting modelDecouple services from hosting model

Enhancing the loaderEnhancing the loaderBetter support for Better support for Enterprise Services scenariosEnterprise Services scenarios

Hosting With IndigoHosting With Indigo

Uses ASP.NET / IIS 6 for HTTP Uses ASP.NET / IIS 6 for HTTP activationactivation

Uses ASP.NET / IIS 7 for HTTP Uses ASP.NET / IIS 7 for HTTP activation plus other protocolsactivation plus other protocols

E.g. SOAP over TCP, IPCE.g. SOAP over TCP, IPC

Expect to see better support for Expect to see better support for Enterprise Services class of scenariosEnterprise Services class of scenarios

Choosing The Right modelChoosing The Right model

Richard Turner’s roadmap talk CTS300Richard Turner’s roadmap talk CTS300Build services using ASMX Build services using ASMX

Components should stay WITHIN Components should stay WITHIN your Servicesyour Services

Use Enterprise Services if you need it’s Use Enterprise Services if you need it’s rich servicesrich services

Use .NET Remoting X-AppDomainUse .NET Remoting X-AppDomain

Use System.Messaging for async Use System.Messaging for async queued messagingqueued messaging

Recommendations Does Your Application…Recommendations Does Your Application…

Need to serve up Web content?Need to serve up Web content?Use ASP.NET / IIS 6.0Use ASP.NET / IIS 6.0

Also need to perform long-lived tasks? Also need to perform long-lived tasks? I.e. order/inventory request processingI.e. order/inventory request processing

Use ASP.NET / IIS 6.0 on the front endUse ASP.NET / IIS 6.0 on the front end

Use queued Enterprise Services in an NT Use queued Enterprise Services in an NT service to perform the long-lived workservice to perform the long-lived work

Need to start at boot time and always Need to start at boot time and always be running?be running?

Use NT ServicesUse NT Services

ConclusionConclusion

Decide how your application needs toDecide how your application needs to

behave, then use the roadmap guidancebehave, then use the roadmap guidance

and the hosting model guidance to drive and the hosting model guidance to drive

your architectureyour architecture

Attend a free chat or web castAttend a free chat or web casthttp://www.microsoft.com/communities/chats/default.mspxhttp://www.microsoft.com/communities/chats/default.mspx http://www.microsoft.com/usa/webcasts/default.asphttp://www.microsoft.com/usa/webcasts/default.asp

List of newsgroupsList of newsgroupshttp://communities2.microsoft.com/http://communities2.microsoft.com/communities/newsgroups/en-us/default.aspxcommunities/newsgroups/en-us/default.aspx

Microsoft Community SitesMicrosoft Community Siteshttp://www.microsoft.com/communities/default.mspxhttp://www.microsoft.com/communities/default.mspx

Locate Local User GroupsLocate Local User Groupshttp://www.microsoft.com/communities/usergroups/default.mspxhttp://www.microsoft.com/communities/usergroups/default.mspx

Community sitesCommunity siteshttp://www.microsoft.com/communities/related/default.mspxhttp://www.microsoft.com/communities/related/default.mspx

http://www.microsoft.com/communities/chats/default.mspx

http://www.microsoft.com/usa/webcasts/default.asp

http://communities2.microsoft.com/communities/newsgroups/en-us/default.aspx

http://communities2.microsoft.com/communities/newsgroups/en-us/default.aspx

http://www.microsoft.com/communities/default.mspx

http://www.microsoft.com/communities/usergroups/default.mspx

http://www.microsoft.com/communities/related/default.mspx

Q1:Q1: Overall satisfaction with the sessionOverall satisfaction with the session

Q2:Q2: Usefulness of the informationUsefulness of the information

Q3:Q3: Presenter’s knowledge of the subjectPresenter’s knowledge of the subject

Q4:Q4: Presenter’s presentation skillsPresenter’s presentation skills

Q5:Q5: Effectiveness of the presentationEffectiveness of the presentation

Please fill out a session evaluation on CommNetPlease fill out a session evaluation on CommNet

Connected Systems TrackConnected Systems TrackMon 10:45Mon 10:45 CTS200 Service Orientation and the Windows/.NET DeveloperCTS200 Service Orientation and the Windows/.NET Developer

Mon 1:30Mon 1:30 CTS300 Prescriptive Guidance-Juggling Web Services, WSE, .NET Remoting, CTS300 Prescriptive Guidance-Juggling Web Services, WSE, .NET Remoting, System.EnterpriseServices, and MSMQSystem.EnterpriseServices, and MSMQ

Mon 3:15Mon 3:15 CTS308 Applied Web Services in Hewlett Packard's Core eCommerce SolutionsCTS308 Applied Web Services in Hewlett Packard's Core eCommerce Solutions

Mon 5:00Mon 5:00 CTS404 Best Practices for Dealing With State at Multiple Layers Within CTS404 Best Practices for Dealing With State at Multiple Layers Within Your .NET ApplicationsYour .NET Applications

Tue 1:30Tue 1:30 DEVC27 Service Orientation OverviewDEVC27 Service Orientation Overview

Tue 3:15Tue 3:15 CTS301 Managed Programming for Win32 DevelopersCTS301 Managed Programming for Win32 Developers

Wed 2:00Wed 2:00 CTS302 Using Web Services Enhancements v2.0 (WSE) to Secure Web ServicesCTS302 Using Web Services Enhancements v2.0 (WSE) to Secure Web Services

Wed 10:15Wed 10:15 CTS400 Using Web Services Enhancements v2.0 for Messaging Over Multiple CTS400 Using Web Services Enhancements v2.0 for Messaging Over Multiple Machines and NetworksMachines and Networks

Wed 5:30Wed 5:30 CTS303 Applied Web Services at the Ohio State University Medical CenterCTS303 Applied Web Services at the Ohio State University Medical Center

Thur 8:30Thur 8:30 CTS403 Handling Errors with TransactionsCTS403 Handling Errors with Transactions

Thur 8:30Thur 8:30 DEVC35 Web Services InteroperabilityDEVC35 Web Services Interoperability

Thur 1:30Thur 1:30 CTS406 Versioning of Connected .NET ApplicationsCTS406 Versioning of Connected .NET Applications

Thur 1:30Thur 1:30 DEVC16 Distributed Applications Performance PanelDEVC16 Distributed Applications Performance Panel

Thur 5:00Thur 5:00 CTS304 Availability and Reliability - Failure Is Not An OptionCTS304 Availability and Reliability - Failure Is Not An Option

Fri 10:45 CTS405 Choosing a Hosting Model - Dealing with Threads, AppDomains, and Processes

Fri 1:00Fri 1:00 CTS306 Deployment and ManagementCTS306 Deployment and Management

Fri 2:45Fri 2:45 CTS307 Using Service Orientation to Drive Business ProcessesCTS307 Using Service Orientation to Drive Business Processes

Fri 9:00Fri 9:00 DEVC40 Versioning PanelDEVC40 Versioning Panel

CTS405 Connected Applications Choosing A Hosting Model Lance Olson Lead Program Manager Microsoft.

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Transcript of CTS405 Connected Applications Choosing A Hosting Model Lance Olson Lead Program Manager Microsoft.