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TIE-21307 (Architecture styles (Special (MVC (Pros (– Easy to implement…

- - - - hierarchical layers
        
        request/response
        
        breaking/bypassing
        
        modeling: hamburger
        
        modeling: matrix
        
        three-tier architecture (alike MVC)
      - dependency analysis
      - Pros/cons
        
        pros
        
        widely applicable
        
        cons
    - - implemenations
        
        push
        
        pull
        
        pipeline
      - concurrency concerns
        
        buffering
      - examples :
        
        one-pass compiler
        
        PhotoShop lightroom
  - - - 2000: SOA
        
        Message-passing (publish-subscribe)
        
        Enterprise Service Bus (ESB)
        
        Examples
        
        Engine control systems
        • IOT systems
        • Multimodal systems, command-centric architectures
        • Business management system of a company
        • Generally: distributed systems, loosely-coupled systems
        
        architecture
        
        broaker
        
        Microservices
        
        HTTP messages
        
        shared memory
        
        cloud systems
      - 70's: Objects
        
        CORBA, Java RMI
      - 80's: Components
      - 90's: Client-Server
        
        sessions
        
        connections as transactions
        
        Examples
        
        Data storage servers
        • Systems based on application servers
        • Email programs (server – terminal program)
        • Network application etc.
        –Common solution, REST interfaces and users
        • Most of the current applications and devices
        
        P2P when clients are servers
        
        Examples
        
        Storage capacity, file distribution systems and technologies
        (e.g. Torrent)
        • Computing power, distributed execution, e.g. Bitcoin
        • Botnets
        • Communication:
        – Skype (old version), centralized server, voice with P2P
        – Devices and machines communicating with each other.
        
        Structured P2P
        
        Goals
        
        –self-organising network
        –content-addressable data store
        –usually based on a decentralised hash table (DHT)
        –a distributed, scalable and fault-tolerant directory
        –search faster than in unstructured systems, typically O(log N).
        
        Examples
        
        Chord, alike ring buffer
        
        Distributed Hash Table (DHT)
  - - - Pros
        
        – Easy to implement several views to the same data
        – All views are automatically synchronised
        – New views can be added to a running system
        – The layout of the interface can be changed with relative ease
      - cons