1. Highly available database clusters with JDBC emmanuel.cecchet@emicnetworks.com

2. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 2 - 19/01/2005 Scaling the database tier – Alternative 1 (SMP) Internet Web frontend App. server Well-known database vendor here Database Well-known hardware + database vendors here è Cons  Cost  Scalability limit

3. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 3 - 19/01/2005 Scaling the database tier – Alternative 2 (shared disks) Internet Web frontend App. server Database Disks Another well-known database vendor è Cons  still expensive hardware  availability

4. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 4 - 19/01/2005 Internet è scalability è high availability è without modifying the client application è database vendor independent è on commodity hardware Database clustering middleware JDBC

5. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 5 - 19/01/2005 RAIDb concept è Redundant Array of Inexpensive Databases è RAIDb controller  gives the view of a single database to the client  balance the load on the database backends è RAIDb levels offers various tradeoff of performance and fault tolerance

6. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 6 - 19/01/2005 RAIDb levels è RAIDb-0  partitioning  no duplication and no fault tolerance  at least 2 nodes

7. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 7 - 19/01/2005 RAIDb levels è RAIDb-1  mirroring  performance bounded by write broadcast  at least 2 nodes

8. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 8 - 19/01/2005 RAIDb levels è RAIDb-2  partial replication  at least 2 copies of each table for fault tolerance  at least 3 nodes

9. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 9 - 19/01/2005 C-JDBC overview è Middleware implementing RAIDb  100% Java implementation  open source (LGPL) è Two components  generic JDBC driver (C-JDBC driver)  C-JDBC Controller è Read-one, Write all approach  provides eager (strong) consistency è Supports heterogeneous databases

10. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 10 - 19/01/2005 architectural overview JVM Application server JVM C-JDBC JDBC driver C-JDBC controller JVM MySQL JDBC driver MySQL database

11. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 11 - 19/01/2005 Inside the C-JDBC Controller Sockets JMX

12. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 12 - 19/01/2005 Scaling existing databases è add open source databases for more fault tolerance and better performances è rules for on-the-fly query rewriting to handle heterogeneity

13. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 13 - 19/01/2005 TPC-W benchmark (Amazon.com) è Nearly linear speedups with the shopping mix

14. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 14 - 19/01/2005 Horizontal & Vertical scalability è adapt and evolve according to user needs è advanced caching functionalities è dynamic adding of database backends è fault tolerant transaction log è integrated backup and checkpointing è grid & edge-side servers support

15. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 15 - 19/01/2005 Administration è JMX Graphical Console  cluster administration  backup/checkpoint mgt  cluster monitoring  SQL profiling  integrated SQL console (iSQL) è Administration API  integration in any existing administration infrastructure  JMX notifications for all internal events  JMX MBeans for monitoring

16. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 16 - 19/01/2005 J2EE end-to-end reliability è ObjectWeb exclusivity è On-demand availability  no SPOF, transparent failover è On-demand scalability  scalability, flexibility Interne t

17. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 17 - 19/01/2005 C-JDBC today è Web site  ~200.000 hits/month  >28.000 downloads  EU (18 countries) 36%, US 28%, Japan 12%, China 5%, Canada 4%, Australia 4%, India 3%, Brazil 2%, … è Community  27 committers both industrial & academics  c-jdbc@objectweb.org: >200 subscribers, 200-300 msgs/month  translation in japanese, italian, chinese, turkish, french, german è RPM on JPackage.org è Professional support by Emic Networks

18. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 18 - 19/01/2005 What’s next? è Tribe (.objectweb.org)  replacement for JGroups  uniform total order broadcast optimized for clusters è LeWYS (.objectweb.org)  hardware and software monitoring  monitoring repository è Distributed query execution è Optimized support for edge-side servers and interconnected clusters

19. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 19 - 19/01/2005 Demos è Tuesday 18  INRIA booth: 12.00 to 1pm  ObjectWeb booth: 2pm to 2.30pm è Wednesday 19  INRIA booth: 10.30am to 11am  ObjectWeb booth: 1pm to 1.30pm

20. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 20 - 19/01/2005 Q&A _________ Thanks to all users and contributors... http://c-jdbc.objectweb.org

21. Bonus slides

22. http://c-jdbc.objectweb.org/ - c-jdbc@objectweb.org ObjectWebCon’05 - 22 - 19/01/2005 Current limitations è JDBC only è Distributed joins è Updatable ResultSets è XA support through XAPool only è transparent controller failover not supported when using horizontal scalability with JGroups è network partition/reconciliation not supported