Next Generation MongoDB: Sessions, Streams, Transactions

MongoDB 3.6 already delivered new killer features like change streams and sessions getting you and your application ready for the future. Now, MongoDB 4.0 transactions take you to the next level.

Transcript

1. Next Generation mongoDB
   Christoph Strobl | @stroblchristoph
   Jeff Yemin | @jeffyemin
   Sessions - Streams - Transactions
   30min
   

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2. Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Next Generation MongoDB
   2
   Christoph Strobl
   Software Engineer, Spring Data
   Jeff Yemin
   Lead Engineer, Drivers
   Sessions - Streams - Transactions
   

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3. Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   

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4. https://pixnio.com/de/landschaften/blatt-blatter/grunes-blatt-flora-natur-baum-sommer-garten

   License: PD
   Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   10,30 €
   incl. VAT

   Shipping information
   4
   $ http GET :8080/book/f430cb49
   HTTP/1.1 200 OK
   Content-Length: 177
   Content-Type: application/json;charset=UTF-8
   {
   "authors": [
   "Peter V. Brett"
   ],
   "id": "f430cb49",
   "language": "English",
   "pages": 880,
   "publishDate": "2017-28-09",
   "publisherId": "Harper Collins Publishers",
   "stock": 3,
   "title": "The Core"
   }
   

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   Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
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   Cart
   Cart Register Shipping Payment Confirmation
   3 copies available
   The Core
   5
   only 2 more copies available
   {
   _id: "f430cb49",
   title: "The Core",
   author: [ "Peter V. Brett" ],
   published_date: ISODate("2017-09-28"),
   pages: 880,
   language: "English",
   publisher_id: "Harper Collins",
   available: 2
   checkout : [
   {by : "cstrobl", date : "2018-
   ]
   }
   $ http POST :8080/book/f430cb49/order
   HTTP/1.1 200 OK
   Content-Length: 267
   Content-Type: application/json;charset=UTF-8
   {
   "books": [ {
   "authors": [
   "Peter V. Brett"
   ],
   "id": "f430cb49",
   "language": "English",
   "pages": 880,
   "publishDate": "2017-28-09",
   "publisherId": "Harper Collins Publishers",
   "title": "The Core"
   } ],
   "customer": "cstrobl",
   "date": "2018-09-04"
   }
   

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6. https://pixnio.com/de/landschaften/blatt-blatter/grunes-blatt-flora-natur-baum-sommer-garten

   License: PD
   Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Cart
   Cart Register Shipping Payment Confirmation
   3 copies available
   The Core
   $ http POST :8080/book/f430cb49/order
   HTTP/1.1 200 OK
   Content-Length: 267
   Content-Type: application/json;charset=UTF-8
   {
   "books": [ {
   "authors": [
   "Peter V. Brett"
   ],
   "id": "f430cb49",
   "language": "English",
   "pages": 880,
   "publishDate": "2017-28-09",
   "publisherId": "Harper Collins Publishers",
   "title": "The Core"
   } ],
   "customer": "cstrobl",
   "date": "2018-09-04"
   }
   6
   only 2 more copies available
   {
   "_id" : "5b8ee10e",
   "by" : "cstrobl",
   "date" : ISODate("2018-09-04"),
   "books" : [
   {
   "$ref" : "books",
   "$id" : "f430cb49"
   }
   ]
   }
   {
   _id: "f430cb49",
   title: "The Core",
   author: [ "Peter V. Brett" ],
   published_date: ISODate("2017-09-28"),
   pages: 880,
   language: "English",
   publisher_id: "Harper Collins",
   available: 2
   }
   

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7. Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Multi Document Transactions
   

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   License: PD
   Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
   Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
   Requirements
   8
   // start transaction
   // update first collection
   // query second collection
   // update third collection
   // commit transaction
   • ACID
   • Conversational, multi-statement
   

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   License: PD
   Unless otherwise indicated, these slides are © 2013-2018 Pivotal Software, Inc. and licensed under a Creative Commons
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   How To Get From There to Here
   9
   Wired Tiger
   MVCC
   3.0 - 3.4
   

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    How To Get From There to Here
    10
    Logical Sessions
    3.6
    Retryable Writes
    

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    How To Get From There to Here
    11
    update : { lsid : 1, txnNum : 1}, updates: […]
    update : { lsid : 1, txnNum : 1}, updates: […]
    { ok : 1}
    Retryable Writes
    IO Exception
    

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    How To Get From There to Here
    12
    Replica Set Transactions
    Sharded Cluster Transactions
    4.0
    4.2 (under development)
    

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    Attribution-NonCommercial license: http://creativecommons.org/licenses/by-nc/3.0/
    https://github.com/christophstrobl/mongodb-bookstore
    

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    License: PD
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    Reactive Multi Document Transactions
    14
    return mongoOperations.inTransaction().execute(action "-> {
    return action.save(order)
    .flatMap(order "-> {
    return action.update(Book.class)
    .matching(query(
    where("id").is(book.id)
    .and("available").gt(0)))
    .apply(new Update().inc("available", -1)).first()
    .flatMap(result "-> {
    if (result.getModifiedCount() "== 0) {
    throw new BookSoldOutException(book);
    }
    return Mono.just(order);
    });
    });
    }).next();
    Flux.usingWhen(() "-> session,
    ClientSession"::commitTransaction,
    ClientSession"::abortTransaction,
    session "-> … )
    @Transactional
    public Mono insertDocuments()
    @Deprecated
    public ReactiveSessionScoped inTransaction()
    

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    Summary & Outlook
    15
    Transactions are multi-document, multi-collection, conversational.
    They fit in well to existing Spring transaction paradigms.

    

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16. > Stay Connected.
    MongoDB 4.0 & SpringData Lovelace Releases are out now!

    Get started with Spring Boot 2.1.M4.
    #springone
    @s1p
    https://www.mongodb.com/transactions
    http://projects.spring.io/spring-data-mongodb/
    

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    17
    

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