Continuous delivery on the cloud
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This document discusses deploying and scaling Java applications on Heroku, a platform as a service (PaaS) that hosts applications in the cloud. Some key points: - Heroku allows developers to run any programming language and focuses on innovation rather than infrastructure maintenance. - Applications are deployed as isolated units called dynos that can be scaled horizontally. Logging and metrics are centralized. - The platform provides services for load balancing, managing processes, and extending functionality through add-ons. - Best practices include building stateless, self-contained applications that can be deployed across dynos and adopt a "12 factor app" methodology.
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pol·y·glot [pol-ee-glot]
adjective
1. able to speak or write several languages; multilingual.
2. containing, composed of, or written in several languages: a
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Continuous delivery on the cloud
- 1. Java on Heroku Deploying and Scaling on the Cloud
- 2. Safe Harbor Statement Safe harbor statement under the Private Securities Litigation Reform Act of 1995. This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by the forward looking-statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any projections of product or service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or technology developments and customer contracts or use of our services. The risks and uncertainties referred to above include - but are not limited to - risks associated with developing and delivering new functionality for our service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and rate of growth, interruptions or delays in our Web hosting, breach of our security measures, the outcome of intellectual property and other litigation, risks associated with possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain, and motivate our employees and manage our growth, new releases of our service and successful customer deployment, our limited history reselling non- salesforce.com products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report on Form 10-Q for the most recent fiscal quarter ended. This documents and others containing important disclosures are available on the SEC Filings section of the Investor Information section of our Web site. Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and may not be delivered on time or at all. Customers who purchase our services should make the purchase decisions based upon features that are currently available. Salesforce.com, inc. assumes no obligation and does not intend to update these forward-looking statements.
- 4. Continuous Delivery “..reducing the cycle time between an idea and usable software” - Martin Fowler “Software delivers no revenue until it is in the hands of its users.” -Jez Humble “.. leads to deeper relationship between IT, their business customer, and their final customers.” -Jez Humble
- 6. Monolithic > Micro apps - Slower Releases Web App -1 Web App -2 - Memory footprint - “noisy” neighbour Scheduled MDBs EJBs Jobs - Single Language Session Managers Message Listeners Clustering M&M App Server Core JVM
- 7. Monolithic > Micro apps + Faster Web App 1 Web App 2 Releases + Isolation JVM / Container JVM / Container + Small Optimized Apps + Scale independently Message Batch Driven apps Jobs + Composite Apps JVM / Container JVM / Container + Polyglot Architecture Cloud Services Cloud icon – courtesy from The Noun Project collection
- 8. One language > Polyglot Presentation Tier (JSP, JSF, Struts) Business Logic Tier (Java) Data Tier RDBMS - No one size fits all - Lower productivity
- 9. One platform > Polyglot Presentation Tier Presentation Tier (JSP, JSF,, Struts) (Rails, HTML5..) Business Logic Tier Business Logic Tier (Java) (Java, Scala, NodeJS) Data Tier Data Tier (RDBMS) RDBMS, NoSQL + Productivity + Language strengths + Performance
- 10. Application UIs > APIs Application UI (Browser) Business Logic Data Tier - SOAP - Single Viewport - Stateful apps
- 11. Application UI > APIs Application UI Application UI Mobile / Tablets Devices (Browser) (Browser) (Java,iOS) Business Logic Business Logic API Data Tier Data Tier + JSON + Multi-Device + Stateless apps + Monetization
- 12. Stateful > Stateless Sticky State Load Balancer App App App Server Server Server 1 1 1 Sessio Sessio Sessio n n n - No continuous deployment - Memory footprint - Less elastic
- 13. Stateful > Stateless Sticky State Load Balancer Load Balancer App App App Server Server Server App App App 1 1 1 Sessio Sessio Sessio n n n Distributed Cache + Continuous Deployment + Lower memory footprint + Elastic Scale
- 14. App Server > HTTP Applications Container - Dev / Production Parity - Complex packaging / deployment
- 15. App Server > Applications Environment HTTP Component + simplified packaging & deployment + Simplified application start + Dev / Prod parity & Environments
- 16. Config > Environments Resource Configuration Application Code JVM Property JNDI Property Multiple build artifacts by env Datasources
- 17. Config > Environments DB_URL=jdbc://.. /DBDev Resource Configuration SFDC_OAUTH=DE V App Application Code JVM Property JNDI Property Dev, Prod Multiple build artifacts by env Datasources Environment Variable: DB_URL=jdbc://postgres…. App will access the URL with: System.getenv(“DB_URL”)
- 18. Mdlwr > Cloud Services Application Code Email Services Databases Databases - Infrastructure not innovation - Maintenance overheads - Productivity
- 19. Mdlwr > Cloud Services Send Grid DB_URL Application Code PubNub Email Services PUB_URL.. App Databases Databases Dev, Prod Papertrail ..URL.. + Focus on innovation + Rapid prototyping + Lower maintenance overheads
- 20. INTRO TO HEROKU
- 22. IaaS Reduces Costs Traditional On-Premise Infrastructure as a Development Service Your Apps Software Stack Software Stack Mobile Server Mobile Server Web Server Web Server Software App Server App Server Infrastructure Hyper V Server Hyper V Server (Slow) Security Server Security Server Operating System Operating System Increase server utilization Hardware Infrastructure Reduce server costs (Expensive) Ease server administration
- 23. Still have stack Infrastructure as a Service management Your Apps Software Stack Mobile Server You still manage the software stack Web Server Software Infrastructure App Server You still upgrade and patch Hyper V Server (Slow) Security Server You still manually scale, tune and back-up Operating System Hardware Infrastructure (Expensive)
- 24. Run Forget See Trust & Anything Servers Everything Manage
- 25. Run anything HTML5 CometD JavaScript Django Perl NoSQL Apex Ruby Groovy Spring Roo MongoDB SOQL Grails Scala Play ! Hibernate Python Spring MVC Clojure Java NodeJS Rails PHP
- 26. Run anything pol·y·glot [pol-ee-glot] adjective 1. able to speak or write several languages; multilingual. 2. containing, composed of, or written in several languages: a polyglot Bible.
- 27. Trust & Manage Forget Servers Elastic Load balancing Dyno manifold • Virtualized Linux Dyno manifold containers (LxC) • Dynos are fully isolated from each other • Erosion resistant
- 28. See Everything Elastic Load balancing Logplex • Real time Dyno manifold stream of all your application events • Consumable Logplex by 3rd party services or syslog drains
- 29. See Everything Elastic Load balancing API • Process status Dyno manifold Control Surface • Manage your processes API • Scale up or down your apps Logplex Clients: • CLI • Eclipse plugin • Apps
- 30. Elastic Load balancing Addons • Extend the Dyno manifold Control Surface Platform • Pre-Installed API Services • Common Components Logplex Addons
- 31. Trend You will be building Micro apps Web app, API service Cloud Services PubNub, Papertrail Environments Salesforce Oauth Stateless Distributed sessions w/Memcache Containerless Webapp-runner
Editor's Notes
- #7: There are so many tools out there that solve for unique and niche use cases Every application has many use cases that can be solved by different frameworks and languages pretty easilyRoR solves for web app development and makes the developer really productiveScala makes functional programming a lot more easy and popularized the “actor” modelNodeJS is becoming a hot framework for highly concurrent event driven applicationsGrails and Groovy are leading the pack in terms of DSLs for JVM languagesTwitter uses Scala for their business tier and RoR for the UI layer, Groupon uses RoRThere is no 1 single language/framework that can satisfy all your app’s needs.