Distributed App Challenges in Cloud
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This document discusses the challenges of developing distributed applications in the cloud. It describes key cloud computing concepts like infrastructure as a service (IaaS), platform as a service (PaaS), and software as a service (SaaS). Specific challenges covered include session management, storage management, using distributed databases, and communication between cloud and on-premise systems. Solutions for session management using caching and affinity are presented.
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Distributed App Challenges in Cloud
- 1. CHALLENGES DISTRIBUTED APPLICATION RADU PINTILIE, VLAD PITARU
- 2. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK CLOUD COMPUTING
- 3. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK DEFINITION Cloud computing is the use of computing resources (hardware and software) that are delivered as a service over a network CLOUD COMPUTING
- 4. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK CATEGORIES Infrastructure as a Service (IaaS) Platform as a Service (PaaS) Software as a Service (SaaS) CLOUD COMPUTING
- 5. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK USE CASES Startups Black Friday Uptime CLOUD COMPUTING
- 6. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK MYOPEL WINDOWS AZURE
- 7. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK MYOPEL Scalability WINDOWS AZURE
- 8. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK MYOPEL Uptime WINDOWS AZURE
- 9. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK MYOPEL Security WINDOWS AZURE
- 10. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK MANAGEMENT PORTAL Demo WINDOWS AZURE
- 11. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK APPLICATIONS DISTRIBUTED
- 12. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK DEFINITION A distributed application is a program meant to run on multiple computers to achieve a common goal DISTRIBUTED APPLICATION
- 13. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK CHALLENGES Session management Storage management Distributed database Communication DISTRIBUTED APPLICATION
- 14. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK SESSION MANAGEMENT Stateless nature of the cloud Synchronization of memory objects Storing of session state data CHALLENGES
- 15. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK SESSION MANAGEMENT Demo CHALLENGES
- 16. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK SESSION MANAGEMENT Use only 1 instance Session affinity Table storage SQL Azure Windows Azure Caching SOLUTIONS
- 17. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK SESSION MANAGEMENT Windows Azure Caching (co-located) -distributed cache -in memory -uses instance resources -LRU eviction SOLUTIONS
- 18. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK SESSION MANAGEMENT Solutions demo SOLUTIONS
- 19. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK STORAGE MANAGEMENT Serving images or documents to a browser Storing files for distributed access Streaming video and audio USE CASES
- 20. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK STORAGE MANAGEMENT Azure Blob Storage - unstructured data CHALLENGES
- 21. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK STORAGE MANAGEMENT Demo CHALLENGES
- 22. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK DISTRIBUTED DATABASE High availability Elastic scale and rapid provisioning CHALLENGES
- 23. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK DISTRIBUTED DATABASE Demo CHALLENGES
- 24. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK COMMUNICATION Emails from Azure No fixed IP Securing On Premise – Cloud communication CHALLENGES
- 25. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK CONCLUSIONS Distributed application scalability Session management Storage management Distributed database CHALLENGES
- 26. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK QUESTIONS ? CHALLENGES
- 27. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK FEEDBACK Please complete the feedback forms CODECAMP
- 28. APRIL 20, 2013Distributed Application Challenges © EXPERT NETWORK THANK YOU
Editor's Notes
- Pregătire: management portal, uptime monitoringPrezentare speakeriAgendă: vom împărtăși din experiența noastră în implementarea unei platforme în cloud pentru Opel
- Ceintelegetiprin cloud computing?Stick premiu
- Folosirearesurselor hardware și software livrate sub formă de serviciu
- IaaS – servere, reteua, load balancer, firewall, masini virtualePaaS – sistem de operare, runtime, baze de date, web server, apiSaaS – nu trebuie instalat la client, nu trebuie gestionată infrastructura sau platforma
- Poateavem startup-uriprinIașiScalabilitate, investiție minimăCe se intamplă de Black FridayUptime greu de garantat, probleme server propriu: os update, crash
- Ceintelegetiprinscalabilitate?Capacitateaunui sistem de a face față și a se adapta unui încărcări suplimentareVerticala: un server maiputernic. Existalimitati. Pretulcreste exponential de la un punctincoloOrizontala: maimulteservere. Aspecte specifice de avut în vedere
- Câți de 9 oferă? Cum:redundanță99,90% 1 instanță – 1minutși jumatatepezi downtime99,95% >1instanță – sub 1 minutpezidowntimeGrafic
- FirewallDDOS protectionHTTPSNetwork Segmentation – rețea privată după load balancer, segmentare pe rețeleSecuritate fizică
- Ceeste o aplicațiedistribuită?CD premiu
- Un program proiectat să ruleze pe mai multe server simultan pentru a îndeplini un obiectiv comunScop : Scalabilitate, uptime ridicatCum – gandimapilicatia in mod distribuitpemaimulteniveleNivelulaplicatiei - maimulteinstanteNivelulcacheului - cache distribuitNivelulstocarii - stocaredistribuitaNivelulbazei de date - baza de date distribuita
- Provocaricheie : SesiuneStocareBaze de dateComunicații
- Sesiune web : perioada de timp in care userulinteractioneaza cu o aplicatie webProvocarea majoră: natura stateless a clouduluiProbleme: sincronizareaobiectelorîn memorie, stocareadatelor de sesiuneUndestocamdatele de sesiune? – ASP.NET –InProc (memory of ASP.NET worker process)ExplicațieschemăExemplele cu ASP.NET
- 3 instanțe, sesiune defaultProbleme
- Solutiile cloud trebuieganditepentruredundantaSession affinity – redirectareaclientuluispreaceeasiinstantaTable storage – ieftindarmaiincetdecatcelelaltesolutiiSQL Azure – potrivit in special dacafolositideja SQL Azure, sesiunileexpiratetrebuiescsterseprinapelareaunei proc. Stoc
- - Serviciu de cache pentruaplicatiileceruleaza in Windows Azure - Cache distribuit - Investitie minima –foloseste din memoriainstantei (procent) -Scalabil – memoriacresteodata cu numarul de instante - Potrivitpentru a stoca date de sesiune, dar nu numai (cache la nivel de aplicatie) - Tehnica de evacuare - Least Recently Used – celmaiputinfolosit item
- - Caching tab terms explained
- Imagini către browse-reStocare fișiere pentru acces distribuitStreaming video și audio
- Blob Storage– serviciu pentru stocarea unor cantități mari de date nestructuratePoate conține până la 100TB de datePartitionare + Georeplicare
- ContainersNo folder structure
- Disponibilitate ridicată – prinbackup în mai multe locațiiElasticitate – query-urile consumatoare de resurse au prioritate scazută pentru a nu le bloca pe celelalteProvisioning – Alocarea resurselor în funție de prioritatea query-urilorBenchmarks
- Motoarele anti-spam sebazeazamultsipereputatia server-ului de pe care pleaca email-ulAdresele IP suntalocatedoar in momentul deploymentSecurizare prin firewall pe clase de IP-uri și autentificareuser/parolă
- Pentru a avea o aplicație distribuită scalabilăsi cu uptimeridicattrebuie tratate provocările de:Gestiunea sesiunii, Gestuinea stocării și distribuirea bazei de date