Appendix C. BEA WEBLOGIC SERVER REVIEW

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1 Vergelijkende Studie van J2EE Applicatieservers 91 Appendix C. BEA WEBLOGIC SERVER REVIEW This document reviews the BEA WebLogic Server v6.1 application server, but refers to the v7.0 bèta where appropriate. Notational convention Text Private Info Marked Inactive Not Disclosed Primary Services Resource Management Memory Consumption Adhemar (NT) Panda (Solaris) Advertized Min. Mem. Req. Measured (Clean) Measured (ECperf) Advertized Min. Mem. Req. Measured (Clean) Measured (ECperf) Thread Pooling Socket Multiplexing Pooling See Web Tier, Application Tier, Information Tier Licensed Compatible J2EE 1.2 J2EE Transaction JTA v1.0 (v1.0.1) J2EE v1.2+ Manager JTS Naming & JNDI v1.2 J2EE v1.2+ Directory AS > LDAP Security Interoperability Client Authentication HTTP Basic HTTP Digest Form SSL 2 J2EE v Authorization JAAS v1.0 Part J2EE v1.3+ Secure SSL v3.0 J2EE v1.2+ Communication TLS v1.0 3 J2EE v1.3+ HTTP HTTPS OMG Messaging v1.0 J2EE v1.2+ v MB 50 MB Private Info 64 MB 90 MB resident, 371 total size Private Info Java IDL J2SE v1.2+ J2EE v1.2+ RMI-IIOP J2EE v1.3+ CSIv2 4 J2EE v1.3+ JMS v1.0 XA Y 5 J2EE v1.2+ (v1.0.2) JAF v1.0 J2EE v Yes for v See 3 Yes for v7.0: 4 Yes for v7.0: 5 JMSConnectionFactory>XAConnectionFactoryEnabled=true

2 Vergelijkende Studie van J2EE Applicatieservers 92 Deployment JavaMail XML JAXP v1.1 Web Services Full API Part Part UDDI 9 Propriatary WAR Deployment EJB-JAR Descriptor RAR 10 Required? EAR v1.1 6 J2EE v1.2 v1.2 J2EE v1.3 J2EE v1.3+ SAX v2 DOM v2 XSLT / / / JAXB JAXM JAX-RPC 7 JAXR Other Soap v1.1 8 (no headers, no custom data types, attachments ignored) over HTTP(S) WSDL v1.1 RPC-based: SLSB Msg-based: eg. MDB Tier Support Web Tier Servlet Version v2.2 v2.3 J2EE v1.2 Part WAR Servlet Names Init Params issecure Role Based Security J2EE v / / / / / JSP Version v1.1 v1.2 Part Filters Event Listeners J2EE v1.2 Part Custom Tags Servlet v2.2 Based J2EE v1.3 Part XML Syntax 12 Servlet v2.3 Based / / / / 6 v1.1.3: 7 Yes for v7.0: 8 Soap v1.2, Swa, for v7.0: 9 Yes for v7.0: 10 See 11 Final draft specification. 12 See

3 Vergelijkende Studie van J2EE Applicatieservers 93 Application Tier Page Caching Custom Tags Caching Deployment Elements 13 EJB Version v1.1 J2EE v1.2 v2.0 J2EE v1.3 Part 14 MDBs Local Interfaces EJB Relations EJB-QL (select & find) Home Methods security run-as unchecked Object Dynamic Proxies 15 Distribution Collocation Optimization Transactions CMT RM Method Level Isolation Levels 16 Element: transaction-isolation DB Locking Optimistic None 17 Strategies Pessimistic Element: concurrency-strategy=database App Tier Locking Optimistic None Strategies Pessimistic Element: concurrency-strategy=exclusive Deadlock Detection 18 Resource Thread Pooling Server Level Management Object Pool Elements: ExecuteQueue, JMSThreadPoolSize Bean Level Management SLSB Element: max-beans-in-free-pool Element: initial-beans-in-free-pool SFSB None EB Element: max-beans-in-free-pool MDB Element: initial-beans-in-free-pool Element: max-beans-in-free-pool Element: initial-beans-in-free-pool Socket Server Level Caching Multiplexing SFSB Element 19 : None cache-type=nru LRU Replacement Management Manage 20 EB Also: max-beans-in-cache cache-type=nru LRU Also: max-beans-in-cache 13 Yes for v7.0: 14 v7.0 has full compliance (J2EE 1.3 certified). 15 Dynamic proxies can be used for RMI: and generated for EJBs automatically (ejbc delegates to rmic) concurrency-strategy=optimistic for v7.0. See 18 Only through the database: 19 ThreadPoolPercentSocketReaders is irrelevant here as it specifies the ratio socket readers/workers.

4 Vergelijkende Studie van J2EE Applicatieservers 94 Information Tier Stores in Application Tier Commit Options Read-Mostly Lazy Loads Delay stores to commit time Tuned CMP Updates 22 Automatic Destination Reconnect for MDBs Relational DB Integration EIS Integration JDBC 2.0 Extensions JDBC Drivers XA 23 JCA 1.0 Other delay-updates-until-end-of-tx A Element: db-is-shared=false; B Element: db-is-shared=true C Element: max-beans-in-cache=0, db-is-shared-true D 21 Elements: concurrency-strategy=readonly; read-timeout-seconds=x Element: finders-load-bean (true by default) Field Grouping Element: field-group (all fields if none specified) XA J2EE v1.2+ Connection Pooling Type 1 Type 2 DB: Oracle 8.1.6, 8.1.7, rd Party Drivers Type 3 Type 4 DB: Informix OnLine versions 7.x, 9.x, with 7.x data types, plus the 9.x INT8 and SERIAL8 data types Microsoft SQL Server 6.5, 7.0 3rd Party Oracle Thin Sybase jconnect DB2 Informix JDBC Type 1 Type 2 DB: Oracle Type 3 24 Type 4 3rd Party Oracle Thin 25 J2EE v1.2+ Included XA EIS: Connectors EIS: 26 EIS: Siebel CRM XA EIS: SAP R/3 Tuxedo Connector: Java Application-to-Transaction Monitor Interface (JATMI) Clustering 20 This requires a persistent cache with bidirectional datasource synchronization decoupled from commit time. 21 Read-only cached, with timed update. 22 See 23 See 24 The JTS driver is used in distributed transactions. 25 See weblogic.developer.interest.jdbc Re: Type-3 vs Type-4 driver for Oracle on 22/04/ No Connectors in WebLogic Server. WebLogic Integration however provides Siebel CRM and SAP R/3 connectors. p. 36. It also provides a tool to create connectors and generate an XML based session façade for use in BPM.

5 Vergelijkende Studie van J2EE Applicatieservers 95 Atomic Homogeneous Deployment 27 Subpartitioning Automatic JNDI Discovery 28 Lifecycle Event Framework Web Web Server Plugin Web Server: Apache Web Server: Microsoft Internet Information Server (ISAPI) Web Server: Netscape Enterprise Server Plug-In (NSAPI) LB Algo s RR 29 Servlet Proxy LB Algo s RR/WRR /Random Integrated LB in default web server LB HW Support LB Algo s RR/WRR/Load/Random /First_Available JNDI EJB Failover Clean Shutdown 30 Architecture Distributed Clean Shutdown 31 LB Algo Limitations HTTP Session Replication None, if cookie integrated In-Memory File JDBC SLSB EJBHome Load Balancing RR/Load/Random by statelessbean-load-algorithm Specialized by custom class 32 Auto Failover Intra 33 EJBObject Load Balancing Same as EJBHome LBA 34 Auto Failover Intra: stateless-bean-methods-areidempotent=true Inter: stateless-bean-methods-areidempotent=false SFSB EJBHome Load Balancing RR/Load/Random by home-loadalgorithm 27 by default, but for a specialised JMX tool: (on WebLogic v7.0 ensures atomic homogeneous deployment by default (see news: weblogic.developer.interest.clustering>atomic Homogeneous Deployment). 28 WL recommends to assign an OS DNS name to the cluster. 29 See 30 Yes for v7.0 through suspend/resume. 31 WL will probably never implement this as it requires the server to track all downloaded client stubs and generates a huge network overhead for a simple server suspension. Instead, WL relies on a basic failover. 32 Use a custom class to implement LB: 33 SLSB EJBHome calls are idempotent. See news: weblogic.developer.interest.clustering>automatic Failover. 34 The documentation for v6.1 (nor for v7.0) does not specify the default LB algorithm and the reference for v6.1 (nor for v7.0) contains no element. Geert Lingier (BEA) answered the question.

6 Vergelijkende Studie van J2EE Applicatieservers 96 EB Specialized by custom class Pin if home-is-clusterable=false Auto Failover Inter 35 EJBObject Load Balancing None (pin) 36 Auto Failover Inter 37 State Replication In-Memory File JDBC Client Stub EJBHome EJBObject Distr. Shared Cache Y 44 Load Balancing RR/Load/Random by home-loadalgorithm Specialized by custom class Pin if home-is-clusterable=false Auto Failover Inter 38 Load Balancing RO None (pin) 39 RW None (pin) 40 Auto Failover RO Intra if home-isclusterable=true RW Inter if home-is- App Tier Locking Strategies Deadlock Detection Manage Y Write Stores in 42 Update App Tier Commit Options Read-Mostly clusterable=true 41 Optimistic Element: Pessimistic Element: Write Invalidate A Element: B Element: Element: D 43 / / / Peer/RM Revalidate 35 Reason: idempotency is not assumed by WL for a SFSB home (arguable, but a create creates a dedicated instance for the client) & there is no deployment property. Note that v7.0 does allow to specify idempotency at the method level through the idempotent-methods element. 36 Reason: performance. 37 Reason: Idempotency not garanteed for SFSB EJBObject & no deployment property. (<-> v7.0) 38 Same note as for SFSB home. Take for example EJBCREATE as a non idempotent method. 39 Reason: performance. See news: weblogic.developer.interest.clustering>automatic Failover. 40 Same reason as for RO. 41 > Entity EJBs in a Cluster 42 This requires a distributed coherent, persistent cache with bidirectional datasource synchronization decoupled from commit time. 43 Read-only cached, with timed update. 44 v7.0 implements a distributed cache with optimistic (not pessimistic) app tier locking: you cannot set cache-between-transactions to "true" in a WebLogic Server cluster when using exclusive concurrency. However, you can set this element to true when using either optimistic or readonly concurrency. See

7 Vergelijkende Studie van J2EE Applicatieservers 97 JDBC MDB 45 Clean Shutdown 46 DataSource Connection Pool Load Balancing RR 47 (not for first call) Auto Failover Inter 48 Load Balancing /RR/WRR/Load/Random/F irst_available Auto Failover Intra/Inter JMS Connection Clean Shutdown ConnectionFactory Connection 49 Load Balancing /RR/WRR/Load/Random/F irst_available Auto Failover Intra/Inter 50 Load Balancing RR 51 (not for first call) Auto Failover Inter 52 Load Balancing /RR/WRR/Load/Random/F irst_available Auto Failover Intra/Inter Destination 54 Clean Shutdown Custom RMI Objects Services JMS Listeners 53 Load Balancing /RR/WRR/Load/Random/F irst_available Auto Failover Intra/Inter Frameworks Name BEA WebLogic Portal Type Portal Name BEA WebLogic Integration Type Integration, BPM 45 An MDB always resides on the same server as its destination. Non persistent destinations do not failover. 46 Yes for v7.0 through suspend/resume. 47 titles Connection LB, but describes random LB at the DataSource level. 48 Not intra as the GETCONNECTION method is not purely idempotent. 49 A DataSource is associated with exactly one ConnectionPool object, i.e.: the one on the same server node. This means that there s no traditional LB. However, on that single server node, one could replicate the connection pool using a MultiPool : 50 Reason is performance. See news: weblogic.developer.interest.jdbc > Re: JDBC in a Cluster any help please. 51 says A similar approach has been, and still is used for the distributed JMS message factories. 52 Same explanation as for a JDBC DataSource. 53 Load balancing occurs on ConnectionFactory.getConnection(), but this is because the connection factory itself is load balanced. Calls on a connection object are not load balanced for performance reasons. See news: weblogic.developer.interest.jdbc 04/04/2002 >Clustered JMS WLS61.1SP1 54 Destinations will be clusterable in v7.0. Load balancing will be RR, failover not automatic. Note that messages will T be replicated across destination replica s! This could however be implemented by a shared HA filesystem (eg.

8 Vergelijkende Studie van J2EE Applicatieservers 98 Administration XML configuration files Centralised Domain Management Administration Server as SNMP Agent JMX Full API Part 57 Protocol Adapters Connectors JMX Server Architecture GUI Trap Configuration 55 MIB Data Cache 56 Agent Layer M-Let Service / Timer Service 58 Monitoring Service / Relation Service / Instrumentation Layer Standard MBeans / Dynamic MBeans / Model MBeans / Open MBeans / Notifications Distributed Services Layer [Not yet standardized in JMX 1.0] HTTP SNMP CIM RMI SOAP JMS Tools Installer Administration Command Line 59 GUI Silent Networked (version neutral) Start Servers 60 CL/Web Stop Servers RM_CL 61 /Web Deploy WAR RM_CL 62 /Web Hot EJB-JAR RM_CL/Web Hot EAR RM_CL/Web Hot JDBC RM_CL 63 /Web Hot RAR Web Hot JMS Web Hot Drag and Drop Deployment, if in development mode. Configure WAR Web Hot Part EJB Web Hot Part JDBC Web Hot JCA Web Hot 55 See 56 See 57 Only the MBeans for the server core are exposed through the bundeled connector. Note however that the WL s MBeanServer is a wrapper around Sun s. 58 See 59 UNIX systems only. See 60 Locally with scripts or via web with Node Manager: see 61 See 62 See weblogic.deploy: 63 See (indeed hot).

9 Vergelijkende Studie van J2EE Applicatieservers 99 XML Editor Code Generation JMS Web Hot Part JTA Web Hot Part Server Web (part) Hot Part LDAP Web Realm SNMP Web JMX See Administration>JMX (adapters & connectors) Also: RM_CL 64 Undeploy WAR RM_CL/Web Hot EJB-JAR RM_CL/Web Hot EAR RM_CL/Web Hot JDBC RM_CL/Web Hot RAR Web Hot JMS Web Hot Monitor Web Web New: JMX remote command line tools 65 EJB Web JDBC Web/RM_CL 66 JCA Web JMS Web JTA Web Server Web Cluster Centr. Admin Name DDInit: weblogic.ant.taskdefs.ejb.ddinit 67 Name EJBGen 3rd Party 3rd Party Input Tags Depl Web Desc EJB O/R > 1 Table With Defaults Import Feature 68 Home Interfaces Bean Interfaces Name XDoclet Input Tags Depl Web Desc EJB O/R > 1 Table With Defaults Import Feature 69 Home Interfaces Bean Interfaces Name Together, Borland JBuilder Input Dialogs Depl Web Desc EJB O/R > 1 Table With Defaults Import Feature 64 See 65 See (on 66 Monitor pool existence. 67 DDInit generates default deployment descriptors: see Feature announced at time of writing (http://xdoclet.sourceforge.net/tools.html#reverse).

10 Vergelijkende Studie van J2EE Applicatieservers 100 Web Services Modeling Remote Debugging Home Interfaces Bean Interfaces 3rd Name WebGain TopLink, Thought Inc CocoBase Party Input Dialogs 70 Depl Web Desc EJB O/R > 1 Table With Defaults Import Feature Home Interfaces Bean Interfaces Packaging & WSDL generation: WSGEN ANT target UML 3rdParty 71 : Together, Rational Rose, WebGain StructureBuilder BPM Versata Studio, AltoWeb AltoStudio & AltoServer, NeuVis NeuArchitect, Bowstreet Business Web Factory 3rdParty: Together, Borland JBuilder, WebGain VisualCafé, NetBeans 72 Documentation Readability Table Contents Media of Searchable Installation Upgrade Documentation Archived Development Easy Structured Printable HTML Tools Component Development 76 JMS 77 JavaMail 78 Explanation 73 Command Line Options 74 Online Help 75 WAR Sample / How-to EJB-JAR SLSB Sample / How-to SFSB Sample / How-to EB CMP Sample / How-to BMP Sample / How-to MDB How-to CORBA Web Services How-to How-to 70 BEA WL v7.0 includes the BEA WebLogic Builder GUI IDE for generating default deployment descriptors: 71 BEA WL v7.0 includes the BEA WebLogic Workshop GUI IDE including Modeling & Debugging features for Web Services based on EJB, JMS, JCA. 72 See 73 See for official BEA WL Server 3rd party tools. See for WL bundled tools. 74 See 75 This applies to the XML editor, not to the ANT integrated development tools. 76 See 77 See

11 Vergelijkende Studie van J2EE Applicatieservers 101 Administration JAAS Sample / How-to 79 Tools Explanation 80 Command Line Options 81 Online Help 82 Definition of Administration Concepts Domain JDBC Configuration JMS JCA Clustering Remote Starting, Stopping Configuration Sample Topologies Deployment Samples WAR How-to EJB-JAR How-to EAR Pet Store Sample Other Sample/How-to 83 RAR Sample/How-to 84 Deployment Descriptor Reference WAR 85 EJB-JAR 86 RAR 87 Monitoring Security 88 ACL Management SSL Web EJB JMX 89 SNMP Admin as Agent Configuration 90 Server MIB Reference 91 Performance Tuning Error Message Reference 92 FAQ > Bug List 94 Webinars 95 Books 96 Magazines 97 : BEA WebLogic Developer s Journal Support Free Tested Cases ECperf Building 78 See 79 See 80 See 81 See 82 is invoked from admin console. 83 See 84 See 85 See 86 See 87 See 88 See 89 See 90 See 91 See 92 A message reference is under development. 93 See 94 See 95 See & 96 See 97 SYS-CON Media, see

12 Vergelijkende Studie van J2EE Applicatieservers 102 Trial Newsgroups Avg. Answering Delay Avg. Engineer Expertise Number Solved Run ECperf on WL +: Received DDs -: for older ECperf version +: Engineer helped getting it right. -: DDInit never mentioned SerialVersionId Problem Classpath problem (J2EE SDK CP clash) -: Not Solved by Engineer Peer Gone Problem Deadlock while running benchmark -: Not Solved by Engineer +: Helped by WL user on J2EE list NodeManager Nodemanager authentication problem +: Solved by Engineer Reconnect to Adminserver Assertion Trying to start a managed server that was already running independently. -: Not Solved by Engineer First Anwser Next BusDay Time To Solution +/- 1,5 week Average Engineer 2 Self 3 Not 0 Number of groups Total: 92; Server-related: +/- 35; Actually Used: 5 Avg. Answering Delay Same Hour/Day for hot groups (eg. ejb); Same Week others (eg. tools) Daily Activity Hot New +/- 5 Group Replies +/- 15 Other New 2/week Replies 2/week % Unanswered Hot After one Day <10% Group After one Week <10% Other After one Day >= 90% After one Week >=50% Open Source Open Source Pluggability Pluggable Server Components Container (enjin, Javlin,...) Performance ECperf Official Results Personal HW Performance Rank 3rd Price/Performance Price/ $7 Rank 1st We used a CMP deployment, except for OrderCustomerEnt and SequenceEnt. The deployment descriptors were prepared by the WebLogic performance tuning group. We made a number of corrections regarding the WLS and ECperf versions 98. The server was started with 256 MB of heap (java ms256m mx256m). We increased the size of the thread pool associated with the default execute queue to 50 and increased ThreadPoolPercentSocketReaders to 80. Adhemar Performance Private Info 98 See

13 Vergelijkende Studie van J2EE Applicatieservers 103 Custom Results Test None Panda Price/Performance Performance Price/Performance Private Info Private Info Private Info Platform Support 99 Supported Platforms v6.1. for Supported Platforms (older WLS versions) Prices Compaq Alpha with Tru64 UNIX Compaq OpenVMS Bull/IBM RS/6000 with AIX 4.3 Bull/IBM RS/6000 with AIX 5L Hewlett-Packard HP/9000 with HP-UX 11.0 Intel Pentium-compatible with Windows 2000 Professional Intel Pentium-compatible with Windows 2000 Server/Advanced Server Intel Pentium-compatible with Windows NT 4.0 Intel Pentium-compatible with Red Hat Linux Sun Microsystems SPARC with Solaris Sun Microsystems Sparc with Solaris 8 Caldera OpenUNIX 8.0 Compaq NonStop Himalaya Hewlett-Packard HP/9000 with HP-UX 11i IBM AS/400e with OS/400 V4R3 IBM AS/400e with OS/400 V4R4/V4R5 IBM DYNIX/ptx Bull/IBM RS/6000 with AIX 4.2 IBM S/390 with OS/390 Intel Pentium-compatible with Windows 98 Linux for S/390 and zseries SCO Unixware Siemens MIPS with Reliant UNIX 5.44C Silicon Graphics with IRIX Sun Microsystems SPARC with Solaris 2.5.1, 2.6, 2.7 Sun Microsystems SPARC with Solaris 8 Production Price per CPU Non Customer Specific (eg. $10K/CPU 100 ) Server Clustered Customer Specific (eg. Private Info) Clustered Customer Specific Development Price per Customer Specific Server CPU/Developer 24x7 Support Remote Price Customer Specific On-Site Price Customer Specific Next Business Remote Price Customer Specific Day Support On-Site Price Customer Specific Project Remote Price Customer Specific Consultant On-Site Price Customer Specific Bundle Name WebLogic Integration Item WebLogic Integration Framework Item WebLogic Server Price Customer Specific (eg. Private Info) Name WebLogic Portal Item WebLogic Portal Framework Item WebLogic Server Price Customer Specific (eg. Private Info) Partnership See 99 See 100 Source:

14 Vergelijkende Studie van J2EE Applicatieservers 104 Offerings

15 Vergelijkende Studie van J2EE Applicatieservers 105 Appendix D. JBOSS REVIEW This document reviews the JBoss application server integrated with the Tomcat web server/container. It discusses JBoss version and Tomcat version 3.2.3, but refers to newer versions up to JBoss 3.0 and Tomcat 4.0 where appropriate. Notational convention Text Private Info Marked Inactive Not Disclosed Primary Services Resource Memory Adhemar (NT) Advertized Min. Mem. Req. 64 MB Management Consumption Measured (Clean) 26 MB Measured (ECperf) Private Info Panda (Solaris) Advertized Min. Mem. Req. 64 MB Measured (Clean) 73 MB resident, 324 MB total size Measured (ECperf) Private Info Thread Pooling Socket Multiplexing 101 Pooling See Web Tier, Application Tier, Information Tier Licensed Compatible J2EE 1.2 J2EE 1.3 Transaction JTA v1.0 Management JTS 102 J2EE v1.2+ Naming & JNDI v J2EE v1.2+ Directory AS > LDAP 104 Security Client Authentication 105 HTTP Basic HTTP Digest 106 Form SSL v J2EE v Authorization JAAS J2EE v1.3+ Secure SSL v J2EE v1.2+ Communication TLS v J2EE v1.3+ Interoperability HTTP 1.0 J2EE v Partially yes: JMS connection multiplexes two sockets in one (org.jboss.mq.il.uil.multiplexor.*). 102 Source: JBoss book. 103 v1.2.1 (dixit Scott Stark, CTO JBoss Group, LLC). 104 See 105 See Tomcat 3.2.x Readme: 106 Officially, digest authentication is fully available only from Tomcat v4.1. See 107 SSL client authentication available from Tomcat v4.0 onwards: see & 108 JBoss uses the JAAS 1.0 extension package from Sun which is a full implementation (dixit Scott Stark, CTO JBoss Group, LLC). 109 See 110 Yes for Tomcat v4.0: see

16 Vergelijkende Studie van J2EE Applicatieservers 106 Deployment HTTPS OMG Java IDL 112 J2SE v1.2+ J2EE v1.2+ RMI-IIOP 113 J2EE v1.3+ CSIv2 J2EE v1.3+ Messaging JMS v1.0 XA Y (v ) 115 J2EE v1.2+ JAF v1.0 J2EE v1.2+ JavaMail v1.1 Y/N J2EE v1.2 v1.2 Y 116 J2EE v1.3 XML JAXP v J2EE v1.3+ Part SAX v2 / DOM v2 / XSLT / Web Services Full API Part JAXB 118 JAXM JAX-RPC Part JAXR Other J2EE Web Service Deployment Specification will be supported 119 UDDI Reg. Propriatary WAR Deployment EJB-JAR Descriptor RAR Required? EAR Tier Support Web Tier Servlet Version v J2EE v1.2 Part WAR Servlet Names Init Params issecure Role Based Security / / / / / 111 Yes for Tomcat v FOR JBOSS V3.0 WITH JACORB announces the feature for JBoss explains a new CONTAINERINVOKER needs to be implemented says: The JMS provider. Called JBossMQ, this is the part of JBoss that implements the JMS specification, including the optional parts, such as the Application Service Facility (ASF) 115 Through JMS JCA adapter (jms-ra.rar). 116 See 117 Through Apache s crimson.jar. 118 JBoss.NET under development: see slide Web services support is not yet bundled with v With Tomcat 3.x.

17 Vergelijkende Studie van J2EE Applicatieservers 107 Application Tier v J2EE v1.3 Part Filters / Event Listeners / JSP v J2EE v1.2 Version Part Custom Tags / Servlet v2.2 Based / v J2EE v1.3 Part XML Syntax / Servlet v2.3 Based / Page Caching Custom Tags 124 Caching Deployment Elements EJB Version v1.1 J2EE v1.2 v2.0 Part J2EE v1.3 MDBs Local Interfaces EJB Relations EJB-QL (select & find) Home Methods security run-as unchecked 125 / / / / / / / Object Dynamic Proxies Distribution Collocation Optimization Transactions CMT RM Datasource Level 126 Isolation Element: mbean Levels org.jboss.jdbc.xadatasourceloader with attribute ManagedConnectionFactoryProperties including TransactionIsolation=XXX. DB Locking Optimistic Not available with CMP 127 Strategies Pessimistic Element: lockingpolicy=org.jboss.ejb.plugins.lock.queuedpessi App Tier Locking Strategies Optimistic Pessimistic misticejblock None None Deadlock Detection 128 Resource Thread Bean / Application / Server Level 121 With Tomcat With Tomcat 3.x. 123 With Tomcat rd party Apache lists bèta "Cache Taglib" at time of writing: 125 Yes for JBoss v3.0. See 127 Yes for 3rd party plugins from for example MVCSoft. 128 Yes for JBoss v There is no configurable EJB thread pooling (http://www.jboss.org/j2ee/dtd/jboss_3_0.dtd). It is delegated to the Tomcat/Jetty web tier: e.g. MinThreads and MaxThreads properties of com.mortbay.http.socketlistener in jboss\conf\tomcat\jetty.xml.

18 Vergelijkende Studie van J2EE Applicatieservers 108 Management Caching Pooling Object Pool Management Socket Multiplexing Replacement Management SFSB Element: Application Level SLSB / Element: container-poolconf>maximumsize SFSB / EB / Element: container-poolconf>maximumsize MDB Bean / Application / Server Level Element: instance-cache= org.jboss.ejb.plugins.statefulsessioninstancecach e No passivation: cache-policy= org.jboss.ejb.plugins.nopassivationcachepolicy LRU: cache-policy= org.jboss.ejb.plugins.lruenterprisecontextcache Policy NRU: overager-period, max-bean-age Manage Stores in Application Tier Commit Options Also: min-capacity, max-capacity, min-cache-missperiod, max-cache-miss-period, cache-load-factor EB instance-cache= Same as SFSB but with instance-cache= org.jboss.ejb.plugins.entitysessioninstancecache 131 Delay stores to Element: None 132 commit time A Element: container-configuration>commit-option=a B Element: container-configuration>commit-option=b C Element: container-configuration>commit-option=c D 133 Element: container-configuration>commit-option=d; read-only=true; time-out=x Read-Mostly 134 Lazy Loads Elements: eager-load 135, read-ahead 136 Field Grouping Element: lazy-load-group Tuned CMP Updates Element: tuned-updates=true Automatic Destination Reconnect for MDBs 137 Information Relational DB JDBC 2.0 J2EE v1.2+ Connection 130 See > Advanced cache configuration. 131 This requires a persistent cache with bidirectional datasource synchronization decoupled from commit time. 132 Delayed write is enabled by default. 133 Read-only cached, with timed update. 134 Source: Bill Burke, co-developer of JBoss Clustering. 135 Without the eager-load element, all fields are aggressively loaded. With the eager-load element, all but the contained fields are lazyly loaded. 136 This enables aggessive loading for finders: preload a configurable (element: limit) number of query results to solve the n+1 problem. 137 Yes for JBoss v3.0: see

19 Vergelijkende Studie van J2EE Applicatieservers 109 Tier Integration EIS Integration Extensions JDBC Drivers XA JCA 1.0 Other XA Type 1 Type 2 Type 3 Type 4 Type 1 Type 2 Type 3 Type 4 None Pooling DB: DB: HSQL Database Engine (hsqldb) DB: DB: HSQL Database Engine (hsqldb) J2EE v1.2+ Included XA 138 EIS: Connectors EIS: EIS: JDBC wrapper 139 XA EIS: JMS wrapper Clustering 140 Web Server: Apache Atomic Homogeneous Deployment 141 Subpartitioning Automatic JNDI Discovery 142 Web Web Server Plugin Lifecycle Event Framework 143 Web Server: Microsoft Internet Information Server (ISAPI) Web Server: Netscape Enterprise Server Plug-In (NSAPI) LB Algo s RR/WRR 144 Servlet Proxy Integrated LB in default web server LB HW Support LB Algo s RR/WRR/Load/Random LB Algo s RR/First_Available LB Algo Limitations None, if cookie integrated Failover 145 HTTP Session In-Memory 138 JBoss v3.0 bundles with the XA wrappers. 139 The wrapper works for JDBC type 1 and 2 drivers only. 140 For JBoss v Reliable JavaGroups communication framework ensures message atomicity. 142 A multicast address is used for automatic discovery. 143 Notification of state transfer events and replica availability: HAPARTITIONSTATETRANSFER and REPLICANTLISTENER interfaces. 144 See & 145 JBoss has currently implemented HTTP Session replication (hence failover) only for Jetty. Tomcat however implements in-memory session replication by itself: see

20 Vergelijkende Studie van J2EE Applicatieservers 110 JNDI EJB 149 Clean Shutdown 147 Architecture Distributed Clean Shutdown 148 SLSB SFSB EB EJBHome EJBObject EJBHome EJBObject State Replication EJBHome EJBObject Distr. Shared Cache Y Replication Load Balancing Auto Failover Load Balancing Auto Failover File 146 JDBC RR/First_Available by home-load-balance-policy Inter RR/First_Available Inter Load Balancing RR/First_Available Auto Failover Inter Load Balancing RR/First_Available Auto Failover Inter In-Memory File 150 JDBC Client Stub 151 Load Balancing RR/First_Available Auto Failover Inter Load Balancing RO RR/First_Available RW RR/First_Available Auto Failover Inter App Tier Optimistic Element: Locking Pessimistic Element: Strategies Deadlock Detection / Manage Y Write Update / Stores in 152 Write Peer/RM App Tier Invalidate Revalidate Commit Options A Element: B Element: Element: D Developers consider this irrelevant in the upcoming releases of JBoss v3.0, but it could be built. Implementation will handed off to JBoss CMP, hence configuration will be based on deployment descriptors (dixit Sacha Labourey). 147 Clean shutdown not available in first iteration of JBoss v3.0. However dynamic WAR updating, suspending active sessions, is available. 148 This could be built with an interceptor. 149 For all bean types: Load Balancing: RR and First_Available are implemented. Others will come as plugins. Automatic failover: inter-method is implemented and all metadata is available for intra-method failover, but the feature is not yet implemented. 150 As with HTTP Session replication, these features will come in future 3.x releases. 151 This feature is under development. 152 This requires a distributed coherent, persistent cache with bidirectional datasource synchronization decoupled from commit time.

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