From Floppy Disks to Cloud Deployments
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While our predecessor product(s) were a COBOL application and later a Windows client/server application distributed on floppies, since 2005 we rock a Java web application that has gone through a lot of changes to keep up with the times. No longer duplicating 5 1/4” 1.2M floppies over the weekend and mailing them to our customers, but a single `git push` will deliver our latest version to our customers. In this session you will learn how we made our application survive for 18 years and still be relevant. Learn how we rearchitected our application from 2005 to 2022, and more importantly, what we did wrong so you can avoid our mistakes. We migrated from Java 1.4 to Java 17, we moved from tomcat+hibernate+velocity via tomcat+hibernate+wicket+cxf+axis+spring+jgroups+ehcache to wildfly+wicket, from deploying on physical hardware to virtual kubernetes nodes. From manually scp-ing releases to gitops, and from Oracle to Postgresql, causing a 5 week outage. If you learn only one thing from Martijn Dashorst’s session: always have a plan B.
![“it is completely unworkable for
over a week already. […] it has
the speed of hitting a tennis
ball through a gardenhose.”
02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE](https://image.slidesharecdn.com/floppydiskstoclouddeployments-220608071844-df877aeb/85/From-Floppy-Disks-to-Cloud-Deployments-25-320.jpg)
![[...] Even so slow that searching is
faster using the old archive (open
archive,
fi
nd folder, browse folder,
transferring the data, storing the
folder, closing the archive). All the
while Parnassys tried to log in. It
didn’t by. the way. And I
fi
nd that
irritating.
02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE](https://image.slidesharecdn.com/floppydiskstoclouddeployments-220608071844-df877aeb/85/From-Floppy-Disks-to-Cloud-Deployments-26-320.jpg)
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- 1. FROM FLOPPIES TO CLOUD DEPLOYMENTS /LESSONS LEARNED MARTIJN DASHORST topicus
- 2. /1992 FONTEIN MAVO, BUSSUM CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40
- 4. IF YOU LEARN JUST ONE THING : ALWAYS HAVE A PLAN B
- 5. /WHY FLOPPIES? /01 A brief history of our products /KEEP IT FRESH /02 An upgrade where we learned a lesson. /ARCHITECTURE UPGRADES /03 Three upgrades, Three lessons learned /TABLE OF CONTENTS /DEPLOYMENTS /04 Deploying software in a more civilised age
- 6. /WHY FLOPPIES? /01 A brief history of our products
- 7. /A BRIEF HISTORY OF TIME 1985-2002 SCHOOLFACT COBOL·DOS·5¼"FLOPPIES 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 8. /A BRIEF HISTORY OF TIME 1985-2002 2002-2009 SCHOOLFACT COBOL·DOS·5¼"FLOPPIES @VO VB·WINDOWS·3½”FLOPPIES 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 9. /A BRIEF HISTORY OF TIME 1985-2002 2002- SCHOOLFACT COBOL·DOS·5¼"FLOPPIES @VO VB·WINDOWS·3½”FLOPPIES 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 10. /A BRIEF HISTORY OF TIME 2009- 1985-2002 2002-2009 SCHOOLFACT COBOL·DOS·5¼"FLOPPIES @VO VB·WINDOWS·3½”FLOPPIES SOMTODAY WEB·SAAS 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 11. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION PARNASSYS PARRO 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 12. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION PARNASSYS VOCUS 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 13. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION PARNASSYS VOCUS @VO @VO 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 14. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION PARNASSYS @VO VOCUS @VO SOMTODAY 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 15. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE 2017 @VO VOCUS @VO SOMTODAY 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 16. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE 2017 @VO SOMTODAY 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 17. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE DAYCARE DIGDAG (PARTOU) 2017 @VO SOMTODAY 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 18. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE DAYCARE DIGDAG (PARTOU) 2017 @VO SOMTODAY KEYHUB 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 19. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE SECURITY KEYHUB 2017 SOMTODAY DAYCARE DIGDAG 01 WHY FLOPPIES? · A BRIEF HISTORY OF TIME
- 20. /KEEP IT FRESH /02 Software expires, especially when frozen…
- 21. /OBSOLESCENCE HAPPENS 2009- 1985-2002 2002-2009 SCHOOLFACT COBOL·DOS·5¼"FLOPPIES @VO VB·WINDOWS·3½”FLOPPIES SOMTODAY WEB·SAAS 02 KEEP IT FRESH · OBSOLESCENCE HAPPENS
- 22. /OBSOLESCENCE HAPPENS 2009- 1985-2002 2002-2009 SCHOOLFACT COBOL·DOS·5¼"FLOPPIES @VO VB·WINDOWS·3½”FLOPPIES SOMTODAY WEB·SAAS 02 KEEP IT FRESH · OBSOLESCENCE HAPPENS
- 23. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE SECURITY KEYHUB DAYCARE DIGDAG
- 24. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION JAVA 6 → JAVA 7 PARNASSYS SOMTODAY EDUARTE 2017 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE SECURITY KEYHUB DAYCARE DIGDAG PARNASSYS
- 25. “it is completely unworkable for over a week already. […] it has the speed of hitting a tennis ball through a gardenhose.” 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE
- 26. [...] Even so slow that searching is faster using the old archive (open archive, fi nd folder, browse folder, transferring the data, storing the folder, closing the archive). All the while Parnassys tried to log in. It didn’t by. the way. And I fi nd that irritating. 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE
- 27. 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE /JAVA 6 → JAVA 7 UPGRADE /INSTABILITY FOR 2 WEEKS Code would stall on synchronization blocks /JAVA 7 PART OF RELEASE NO WAY BACK : database and essential features and integrations were released to customers /SUSPEND VS SPINNING Waiting for lock: suspend or spin. <6 suspend > = 6 spin.
- 28. —WE “First deploy the new Java runtime to Test, Acceptance and Production before writing source code using the new Java version” 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE
- 29. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION JAVA 6 → JAVA 7 PARNASSYS SOMTODAY EDUARTE 2017 JAVA 8 JAVA 11 JAVA 17 02 KEEP IT FRESH · JAVA 6 → JAVA 7 UPGRADE SECURITY KEYHUB DAYCARE DIGDAG
- 30. DTAP FOR CODE, TAPD FOR INFRASTRUCTURE Always have a plan B /RECOMMENDATION 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 32. /ARCHITECTURE UPGRADES /TOMCAT → WILDFLY Reevaluate your past decisions to see if they still hold true /SHARED BASE PLATFORM Code can’t be preserved, it goes stale and then bad. Share the upgrade load. /ORACLE → POSTGRESQL + K8S Don’t execute plan A and B together at the same time 03 ARCHITECTURE UPGRADES
- 33. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY TOMCAT SECURITY KEYHUB DAYCARE DIGDAG
- 34. /HOW IT STARTED TOMCAT HIBERNATE WICKET BROWSERS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 35. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 36. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS BONECP 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 37. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS BONECP QUARTZ 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 38. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS BONECP QUARTZ WEB SERVICES AXIS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 39. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS BONECP QUARTZ WEB SERVICES AXIS + AXIS 2 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 40. /HOW IT STARTED TOMCAT HIBERNATE EHCACHE WICKET BROWSERS BONECP QUARTZ WEB SERVICES AXIS + AXIS 2 + CXF 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 41. /HOW IT STARTED TOMCAT BONECP HIBERNATE SPRING BEANS SPRING CONTEXT EHCACHE QUARTZ SPRING TRANSACTION AXIS + AXIS 2 + CXF WICKET WEB SERVICES BROWSERS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 42. /JAVA EE? SERVLET 3 JSF 2 EJB 3.1 JPA 2 JSP CDI JTA BEAN JAX-WS JAX-RPC JAXR SAAJ JAX-RS JAXB JMS JAAS JASPIC JACC JCA JAVA MAIL JSR 88 JSR 77 RMI JNDI BATCH CONCURRENCY 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 43. /JAVA EE? SERVLET 3 JSF 2 EJB 3.1 JPA 2 JSP CDI JTA BEAN VALIDATION JAX-WS JAX-RPC JAXR SAAJ JAX-RS JAXB JMS JAAS JASPIC JACC JCA JAVA MAIL JSR 88 JSR 77 RMI JNDI SPRING BEANS HIBERNATE SPRING CORE SPRING CONTEXT SPRING TRANSACTION BATCH CONCURRENC QUARTZ QUARTZ 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY HIBERNATE JAVA MAIL WICKET WICKET CXF CXF CXF
- 44. IF IT QUACKS LIKE JAVA EE, IF IT LOOKS LIKE JAVA EE, IT PROBABLY IS JAVA EE
- 45. /HOW IT STARTED TOMCAT BONECP HIBERNATE SPRING BEANS SPRING CONTEXT EHCACHE QUARTZ SPRING TRANSACTION CXF WICKET WEB SERVICES BROWSERS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 46. /HOW IT’ GOING WILDFLY WICKET WEB SERVICES BROWSERS 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 47. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY TOMCAT SECURITY KEYHUB DAYCARE DIGDAG WILDFLY
- 48. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY TOMCAT SECURITY KEYHUB DAYCARE DIGDAG WILDFLY
- 49. REEVALUATE YOUR OLD DECISIONS What was once a good decision may no longer be the best. /RECOMMENDATION 03 ARCHITECTURE UPGRADES · 01 FROM TOMCAT TO WILDFLY
- 50. /ARCHITECTURE UPGRADES /TOMCAT → WILDFLY Reevaluate your past decisions to see if they still hold true /SHARED BASE PLATFORM Code can’t be preserved, it goes stale and then bad. Share the upgrade load. /ORACLE → POSTGRESQL + K8S Don’t execute plan A and B together at the same time 03 ARCHITECTURE UPGRADES
- 51. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 03 ARCHITECTURE UPGRADES · 01 ONE SHARED BASE PLATFORM SECURITY KEYHUB DAYCARE DIGDAG WILDFLY
- 52. /ONE SHARED BASE PLATFORM ONDERWIJS PARENT PARNASSYS SOMTODAY EDUARTE DIGDAG KEYHUB JAVA EE WILDFLY JAVA EVERY 14 DAYS Upgrade all dependencies to latest releases 03 ARCHITECTURE UPGRADES · 01 ONE SHARED BASE PLATFORM
- 53. STAY UP TO DATE Code can’t be preserved, it goes stale and then bad. Share the upgrade load. /RECOMMENDATION 03 ARCHITECTURE UPGRADES · 01 ONE SHARED BASE PLATFORM
- 54. /ARCHITECTURE UPGRADES /TOMCAT → WILDFLY Reevaluate your past decisions to see if they still hold true /SHARED BASE PLATFORM Code can’t be preserved, it goes stale and then bad. Share the upgrade load. /ORACLE → POSTGRESQL + K8S Don’t execute plan A and B together at the same time 03 ARCHITECTURE UPGRADES
- 55. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS EDUARTE SECURITY KEYHUB 2017 SOMTODAY DAYCARE DIGDAG ORA → PG K8S SUMMER 2020 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME ORA → PG
- 56. /WHY MIGRATE FROM ORACLE /MIGRATION ASSISTENT Licensing audit took 3 years, extortion racket /PRICE Our DB server core count costs €€€ /TOOLING Requires RAC / Enterprise license, €€€ 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 57. /SOMTODAY - ~220 schools - 8 streets - 1 schema / street - 1 database server: Oracle - column tenant identif i er 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME
- 58. 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME /BEFORE ORACLE PROD ADMIN STUDENT REST STREET 1 SCHOOLS 1—25
- 59. 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME /BEFORE ORACLE PROD ADMIN STUDENT REST STREET 1 ORACLE PROD ADMIN STUDENT REST STREET 2 ORACLE PROD ADMIN STUDENT REST STREET 3 ORACLE PROD ADMIN STUDENT REST STREET 4 ORACLE PROD ADMIN STUDENT REST STREET 5 ORACLE PROD ADMIN STUDENT REST STREET 6 ORACLE PROD ADMIN STUDENT REST STREET 7 ORACLE PROD ADMIN STUDENT REST STREET 8 SCHOOLS 1—25 SCHOOLS 26—50 SCHOOLS 51—75 SCHOOLS 76—100 SCHOOLS 101—125 SCHOOLS 126—150 SCHOOLS 151—175 SCHOOLS 176—200
- 60. MIGRATION PLAN - Oracle → Postgresql - Bare metal → Kubernetes YOU CAN’T SOLVE A PROBLEM JUST BY SAYING TECHY THINGS. KUBERNETES. © Scott Adams · dilbert.com 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 61. 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME /AFTER? PROD ADMIN STUDENT REST ADMIN ADMIN ADMIN STUDENT STUDENT STUDENT STUDENT REST REST KUBERNETES
- 62. /SCHEMA PER TENANT Each tenant gets its own schema for tenant data, one schema for nation wide data 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME NATIONWIDE DATA leerling vak resultaat toets rooster absentie ouder rapport examen kluisje huiswerk pakket opleiding docent rol adres
- 63. /ORA2PG /FREE Dutchies most favorite criterium! /CUSTOM MIGRATION Renumber IDs, move schemas /BIG BANG MIGRATION There’s no PG2ORA, so one - way only 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 64. 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 65. /FAILURES Database processes kept restarting due to memory errors /MORE FAILURES Amount of connections overwhelmed database, pgbouncer to the rescue pgbouncer does not support server - side prepared statements Amount of queries overwhelmed database due to Java EE caching issues Amount of long running idle transactions overwhelmed database /FAILURE MODE ENGAGED 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 66. 5 WEEKS OUTAGE START OF SCHOOL YEAR 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME
- 67. 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME /FINAL SOLUTION PROD ADMIN STUDENT REST ADMIN ADMIN ADMIN STUDENT STUDENT STUDENT STUDENT REST REST KUBERNETES PROD PGBOUNCER PGBOUNCER
- 68. ONLY DO ONE MIGRATION AT A TIME And… Always have a plan B 03 ARCHITECTURE UPGRADES · 03 FROM ORACLE TO POSTGRESQL FOR THE 2ND TIME /RECOMMENDATION
- 69. /DEPLOYMENTS /04 Deploying software in a more civilised age
- 70. /FLOPPY SOFTWARE RELEASES INDEX.HTML How do we ship software currently /CLOUDY DEPLOYMENT How did “we” ship software in them ole days? /WHAT IS THIS TOPIC ABOUT? YOUR LOGO HERE
- 71. /SOFTWARE RELEASE PROCESS /MODIFY HELM CHART Apply a sprinkle of YAML INDEX.HTML 04 TO CLOUD DEPLOYMENTS · CURRENT SOFTWARE RELEASE PROCESS
- 72. /SOFTWARE RELEASE PROCESS /PUSH TO GITHUB Perform change request review /MODIFY HELM CHART Apply a sprinkle of YAML INDEX.HTML 04 TO CLOUD DEPLOYMENTS · CURRENT SOFTWARE RELEASE PROCESS
- 73. /SOFTWARE RELEASE PROCESS /PUSH TO GITHUB Perform change request review /MODIFY HELM CHART Apply a sprinkle of YAML /MERGE TO BRANCH Triggers ARGO CD INDEX.HTML 04 TO CLOUD DEPLOYMENTS · CURRENT SOFTWARE RELEASE PROCESS
- 74. /SOFTWARE RELEASE PROCESS /PUSH TO GITHUB Perform change request review /DONE ARGO CD updates K8S and deploys modif i cations /MODIFY HELM CHART Apply a sprinkle of YAML /MERGE TO BRANCH Triggers ARGO CD INDEX.HTML 04 TO CLOUD DEPLOYMENTS · CURRENT SOFTWARE RELEASE PROCESS
- 75. ~25 mins From code change to patch on production 04 TO CLOUD DEPLOYMENTS · CURRENT SOFTWARE RELEASE PROCESS « no CI/CD (yet) »
- 76. /FLOPPY SOFTWARE RELEASES INDEX.HTML How do we ship software currently /CLOUDY DEPLOYMENT How did “we” ship software in them ole days? /WHAT IS THIS TOPIC ABOUT? YOUR LOGO HERE
- 77. /1992 FONTEIN MAVO, BUSSUM CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40 CMG SCHOOLFACT 3 22/40
- 78. CopyPro 2000 * 44-230 diskettes per hour * Unattended operation * 50 disk capacity option included * High Speed Drives * Separate Reject Bin * Drive Cleaning Mode * Automatic Batch Mode Processing using multiple Disk Masters * Bit - by - bit verif i cation 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS
- 79. CONTROL PANEL INPUT BIN OUTPUT BIN REJECT COMPARTMENT 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS
- 80. 300 customers 40 floppy’s / release 200 / hr / machine 12,000 /A BIG NUMBER TO SUPPORT THE CONCEPT 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS floppies
- 81. 300 customers 40 floppy’s / release 200 / hr / machine 60 hrs /A BIG NUMBER TO SUPPORT THE CONCEPT 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS
- 82. 300 customers 4 boxes of 10 floppies €5 / shipment €1500 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS /SHIPPING TARIFS: TPGPOST.NL 2002
- 83. DON’T USE FLOPPIES Nobody can use them anymore and they are expensive. /RECOMMENDATION 04 TO CLOUD DEPLOYMENTS · FLOPPY DEPLOYMENTS
- 84. /CONCLUSION /05
- 85. JAVA 6 → JAVA 7 → JAVA 8 → JAVA 11 → JAVA 17 Use TAPD for infrastructure, DTAP for code. Always have a plan B MIGRATION FROM ORACLE 2 + KUBERNETES You will not sleep well when there’s no plan B. TOMCAT → WILDFLY REEVALUATE YOUR OLD DECISIONS. What was once a good decision may no longer be the best. MIGRATION FROM ORACLE 1 Projectmanagers sleep better with the security of a plan B USE SHARED BASE PLATFORM One parent POM to rule them all and in the build bind them . . . /WHAT DID WE DO? AUTOMATED DEPLOYMENTS Infrastructure as Code saves your life.
- 86. /DTAP FOR CODE, TAPD FOR INFRASTRUCTURE Always have a plan B /ONLY DO ONE MIGRATION AT A TIME And… Always have a plan B /REEVALUATE YOUR OLD DECISIONS What was once a good decision may no longer be the best. /PAID SOFTWARE MAY BE WORTH IT Don’t dismiss paid software that prevents a problem /STAY UP TO DATE Code can’t be preserved, it goes stale and then bad. Share the load. /RECOMMENDATIONS /DON’T USE FLOPPIES Nobody can use them anymore and they are expensive as hell
- 87. ALWAYS HAVE A PLAN B (AND DON’T USE FLOPPIES)
- 88. CREDITS: This presentation template was created by Slidesgo, and includes icons by Flaticon, and infographics & images by Freepik THANKS! DO YOU HAVE ANY QUESTIONS? [email protected] topicus.nl · topicus.com · martijndashorst.com @dashorst
- 90. 2004 2006 2008 2010 2012 2014 2016 2018 2020 2022 PRIMARY EDUCATION SECONDARY EDUCATION VOCATIONAL EDUCATION PARNASSYS SOMTODAY EDUARTE 2017 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME ORA → PG SECURITY KEYHUB DAYCARE DIGDAG PARNASSYS SUMMER 2018
- 91. /PARNASSYS - ~6500 schools - 1 schema - 1 database: Oracle - column tenant identif i er 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME
- 92. /WHY MIGRATE FROM ORACLE /MIGRATION ASSISTENT Licensing audit took 3 years, extortion racket /PRICE Our DB server core count costs €€€ /TOOLING Requires RAC / Enterprise license, €€€ 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME
- 93. /BEFORE 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME PRIMARY SECONDARY standby ORACLE ORACLE standard replication production
- 94. /AFTER? 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME PRIMARY SECONDARY STANDBY standard replication
- 95. /ORA2PG /FREE Dutchies most favorite criterium! /SLOW 1 day for 1 migration attempt, or unstable (parallel) /BIG BANG MIGRATION There’s no PG2ORA, so one - way only 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME
- 96. NOPE LOOK AT ALL THE NOPE NOPE NOPE NOPE 🎶♬ ♪🎵
- 97. /HVR /EXPENSIVE “Call for pricing” — Dutchies least favourite criterium! /FAST Real - time sync, low latency /REVERSIBLE Bi - directional, cross database synchronization! 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME Cross-database replica ti on using redo logs
- 98. /HVR «BEFORE MIGRATION» 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME PRIMARY NEW PRIMARY ORACLE SECONDARY failsafe ORACLE PROD PROD standby standard replication
- 99. /HVR «BEFORE MIGRATION» 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME ORACLE failsafe ORACLE PROD PROD standby HVR HVR standard replication PRIMARY NEW PRIMARY SECONDARY
- 100. /HVR «AFTER MIGRATION» 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME ORACLE failsafe ORACLE PROD PROD standby standard replication HVR HVR OLD PRIMARY PRIMARY SECONDARY
- 101. /CURRENT DATABASE 03 ARCHITECTURE UPGRADES · 02 FROM ORACLE TO POSTGRESQL FOR THE 1ST TIME PROD standby standard replication PRIMARY SECONDARY OLD PRIMARY
- 102. /DTAP FOR CODE, TAPD FOR INFRASTRUCTURE Always have a plan B /REEVALUATE YOUR OLD DECISIONS What was once a good decision may no longer be the best. /PAID SOFTWARE MAY BE WORTH IT Don’t dismiss paid software that prevents a problem /STAY UP TO DATE Code can’t be preserved, it goes stale and then bad. Share the load. /RECOMMENDATIONS