SlideShare a Scribd company logo
Core Data in
Modern Times
Jorge D. Ortiz-Fuentes
@jdortiz
#CoreDataMT
A Canonical
Examples
production
#CoreDataMT
Agenda
★ Background info
★ Comparisons
• Realm
• Android Content Providers
★ Concurrency in Core Data
★ Threats to Core Data
★ Protect yourself
Background Info
Core Data concepts
★ Data persistence
• Objects <-> Data
★ Relationships
• 1-1
• 1-M
• M-M
★ Store independence
Core Data
Persistent
Store
Persistent
Store
Persistent
Store Coordinator Managed Object
Model
Managed Object Context
MO MO MO MO MO
Core Data Virtues
★ Visual model
★ Seamless integration with Objective-C
★ Relationships, deletion rules, Faulting & Uniquing
★ Undo management and Change tracking
★ KVC & KVO
★ Filtering, sorting, grouping
★ Versioning and migration
★ Merge policies
FetchedResultsController
Anatomy
★ iOS only
★ Controller
• uses a fetch request
• coordinates getting data and caches
them
• notifies of changes
Bindings
★ OS X only
★ Sync UI and Coredata
★ Reduce the amount of code required
Comparisons
are odious
Realm
Realm: Pros & Cons
★ Born mobile
★ Models in code(PK)
★ Built in encryption
★ Multi-thread &
Multi-process
★ Good performance
★ No delete rules
★ No fine grained
notifications (KVO)
★ No null properties
★ No sync solutions
Android Content
Providers
Android Content
★ Content providers
• Abstract data sources
• Access to data via URI (REST style)
• It can be exported to other apps
• Thread safety via synchronized (or multi-
instance)
★ Content resolver to map authorities to providers
Concurrency in
Core Data
Background
Queue
Main
Queue
Single process approach
★ Context
• Private
• MainQueue
★ Nested contexts
• Save pushes changes to
parent (no I/O)
• Parent saves in the
background
child
MOC
pStore
parent
MOC
Good practices
★ Avoid premature optimization
★ Have a police for when to use concurrency
★ Really follow 1 & 2
Also available now
★ Batch updates (Brent Simmons’ problem)
★ Asynchronous fetching
UIManagedDocument
★ Uses the model in the bundle
★ Async I/O
★ Completion blocks after opening or saving
★ Parent is in background and autosaves
★ Also additional data
Threats to Core
Data
Threats
★ Swift
• Introspection is still half baked (@NSManaged)
• Many features of Cocoa depend on the runtime
★ Lack of multi-process capabilities
★ Apple generated doubts:
• Photos using
• Removed from Lister?
Protect yourself
– Robert C Martin (Uncle Bob)
“The database is a detail!”
Clean Architecture
View (VC) Presenter
Wireframe
Interactor Repository
Persistence
WSC
canonicalexamples.com
coupon:
COCOAHEADSNL
Thank
you!
@jdortiz
#CoreDataMT

More Related Content

Similar to Core Data in Modern Times

A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
DATAVERSITY
 
Implementing MongoDB at Shutterfly (Kenny Gorman)
Implementing MongoDB at Shutterfly (Kenny Gorman)Implementing MongoDB at Shutterfly (Kenny Gorman)
Implementing MongoDB at Shutterfly (Kenny Gorman)
MongoSF
 
Open source data_warehousing_overview
Open source data_warehousing_overviewOpen source data_warehousing_overview
Open source data_warehousing_overview
Alex Meadows
 

Similar to Core Data in Modern Times (20)

Training on iOS app development - Samesh Swongamikha & Neetin Sharma
Training on iOS app development - Samesh Swongamikha & Neetin SharmaTraining on iOS app development - Samesh Swongamikha & Neetin Sharma
Training on iOS app development - Samesh Swongamikha & Neetin Sharma
 
Destroying Data Silos
Destroying Data SilosDestroying Data Silos
Destroying Data Silos
 
CISSP Prep: Ch 9. Software Development Security
CISSP Prep: Ch 9. Software Development SecurityCISSP Prep: Ch 9. Software Development Security
CISSP Prep: Ch 9. Software Development Security
 
8. Software Development Security
8. Software Development Security8. Software Development Security
8. Software Development Security
 
Destroying Data Silos
Destroying Data SilosDestroying Data Silos
Destroying Data Silos
 
8. Software Development Security
8. Software Development Security8. Software Development Security
8. Software Development Security
 
A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
A Case Study of NoSQL Adoption: What Drove Wordnik Non-Relational?
 
Webinar: How MongoDB is Used to Manage Reference Data - May 2014
Webinar: How MongoDB is Used to Manage Reference Data - May 2014Webinar: How MongoDB is Used to Manage Reference Data - May 2014
Webinar: How MongoDB is Used to Manage Reference Data - May 2014
 
Entity Framework For DBAs
Entity Framework For DBAsEntity Framework For DBAs
Entity Framework For DBAs
 
How to grow your own Microservice?
How to grow your own Microservice?How to grow your own Microservice?
How to grow your own Microservice?
 
Delivering Changes for Applications and Databases
Delivering Changes for Applications and DatabasesDelivering Changes for Applications and Databases
Delivering Changes for Applications and Databases
 
Oracle OpenWo2014 review part 03 three_paa_s_database
Oracle OpenWo2014 review part 03 three_paa_s_databaseOracle OpenWo2014 review part 03 three_paa_s_database
Oracle OpenWo2014 review part 03 three_paa_s_database
 
Object-Relational Mapping and Dependency Injection
Object-Relational Mapping and Dependency InjectionObject-Relational Mapping and Dependency Injection
Object-Relational Mapping and Dependency Injection
 
Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...
Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...
Introducing NoSQL and MongoDB to complement Relational Databases (AMIS SIG 14...
 
1. SQL Server forSharePoint geeksA gentle introductionThomas Vochten • Septem...
1. SQL Server forSharePoint geeksA gentle introductionThomas Vochten • Septem...1. SQL Server forSharePoint geeksA gentle introductionThomas Vochten • Septem...
1. SQL Server forSharePoint geeksA gentle introductionThomas Vochten • Septem...
 
Endeca Performance Considerations
Endeca Performance ConsiderationsEndeca Performance Considerations
Endeca Performance Considerations
 
Implementing MongoDB at Shutterfly (Kenny Gorman)
Implementing MongoDB at Shutterfly (Kenny Gorman)Implementing MongoDB at Shutterfly (Kenny Gorman)
Implementing MongoDB at Shutterfly (Kenny Gorman)
 
Open source data_warehousing_overview
Open source data_warehousing_overviewOpen source data_warehousing_overview
Open source data_warehousing_overview
 
Entity Framework 7: What's New?
Entity Framework 7: What's New?Entity Framework 7: What's New?
Entity Framework 7: What's New?
 
Ciel, mes données ne sont plus relationnelles
Ciel, mes données ne sont plus relationnellesCiel, mes données ne sont plus relationnelles
Ciel, mes données ne sont plus relationnelles
 

More from Jorge Ortiz

More from Jorge Ortiz (20)

Tell Me Quando - Implementing Feature Flags
Tell Me Quando - Implementing Feature FlagsTell Me Quando - Implementing Feature Flags
Tell Me Quando - Implementing Feature Flags
 
Unit Test your Views
Unit Test your ViewsUnit Test your Views
Unit Test your Views
 
Control your Voice like a Bene Gesserit
Control your Voice like a Bene GesseritControl your Voice like a Bene Gesserit
Control your Voice like a Bene Gesserit
 
Kata gilded rose en Golang
Kata gilded rose en GolangKata gilded rose en Golang
Kata gilded rose en Golang
 
CYA: Cover Your App
CYA: Cover Your AppCYA: Cover Your App
CYA: Cover Your App
 
Refactor your way forward
Refactor your way forwardRefactor your way forward
Refactor your way forward
 
201710 Fly Me to the View - iOS Conf SG
201710 Fly Me to the View - iOS Conf SG201710 Fly Me to the View - iOS Conf SG
201710 Fly Me to the View - iOS Conf SG
 
Home Improvement: Architecture & Kotlin
Home Improvement: Architecture & KotlinHome Improvement: Architecture & Kotlin
Home Improvement: Architecture & Kotlin
 
Architectural superpowers
Architectural superpowersArchitectural superpowers
Architectural superpowers
 
Architecting Alive Apps
Architecting Alive AppsArchitecting Alive Apps
Architecting Alive Apps
 
iOS advanced architecture workshop 3h edition
iOS advanced architecture workshop 3h editioniOS advanced architecture workshop 3h edition
iOS advanced architecture workshop 3h edition
 
Android clean architecture workshop 3h edition
Android clean architecture workshop 3h editionAndroid clean architecture workshop 3h edition
Android clean architecture workshop 3h edition
 
To Protect & To Serve
To Protect & To ServeTo Protect & To Serve
To Protect & To Serve
 
Clean architecture workshop
Clean architecture workshopClean architecture workshop
Clean architecture workshop
 
Escape from Mars
Escape from MarsEscape from Mars
Escape from Mars
 
Why the Dark Side should use Swift and a SOLID Architecture
Why the Dark Side should use Swift and a SOLID ArchitectureWhy the Dark Side should use Swift and a SOLID Architecture
Why the Dark Side should use Swift and a SOLID Architecture
 
Dependence day insurgence
Dependence day insurgenceDependence day insurgence
Dependence day insurgence
 
Architectural superpowers
Architectural superpowersArchitectural superpowers
Architectural superpowers
 
TDD for the masses
TDD for the massesTDD for the masses
TDD for the masses
 
7 Stages of Unit Testing in iOS
7 Stages of Unit Testing in iOS7 Stages of Unit Testing in iOS
7 Stages of Unit Testing in iOS
 

Recently uploaded

Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo DiehlFuture Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
Peter Udo Diehl
 

Recently uploaded (20)

Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo DiehlFuture Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
Future Visions: Predictions to Guide and Time Tech Innovation, Peter Udo Diehl
 
UiPath Test Automation using UiPath Test Suite series, part 2
UiPath Test Automation using UiPath Test Suite series, part 2UiPath Test Automation using UiPath Test Suite series, part 2
UiPath Test Automation using UiPath Test Suite series, part 2
 
Connecting the Dots in Product Design at KAYAK
Connecting the Dots in Product Design at KAYAKConnecting the Dots in Product Design at KAYAK
Connecting the Dots in Product Design at KAYAK
 
10 Differences between Sales Cloud and CPQ, Blanka Doktorová
10 Differences between Sales Cloud and CPQ, Blanka Doktorová10 Differences between Sales Cloud and CPQ, Blanka Doktorová
10 Differences between Sales Cloud and CPQ, Blanka Doktorová
 
Server-Driven User Interface (SDUI) at Priceline
Server-Driven User Interface (SDUI) at PricelineServer-Driven User Interface (SDUI) at Priceline
Server-Driven User Interface (SDUI) at Priceline
 
Strategic AI Integration in Engineering Teams
Strategic AI Integration in Engineering TeamsStrategic AI Integration in Engineering Teams
Strategic AI Integration in Engineering Teams
 
Demystifying gRPC in .Net by John Staveley
Demystifying gRPC in .Net by John StaveleyDemystifying gRPC in .Net by John Staveley
Demystifying gRPC in .Net by John Staveley
 
Motion for AI: Creating Empathy in Technology
Motion for AI: Creating Empathy in TechnologyMotion for AI: Creating Empathy in Technology
Motion for AI: Creating Empathy in Technology
 
PLAI - Acceleration Program for Generative A.I. Startups
PLAI - Acceleration Program for Generative A.I. StartupsPLAI - Acceleration Program for Generative A.I. Startups
PLAI - Acceleration Program for Generative A.I. Startups
 
Behind the Scenes From the Manager's Chair: Decoding the Secrets of Successfu...
Behind the Scenes From the Manager's Chair: Decoding the Secrets of Successfu...Behind the Scenes From the Manager's Chair: Decoding the Secrets of Successfu...
Behind the Scenes From the Manager's Chair: Decoding the Secrets of Successfu...
 
ECS 2024 Teams Premium - Pretty Secure
ECS 2024   Teams Premium - Pretty SecureECS 2024   Teams Premium - Pretty Secure
ECS 2024 Teams Premium - Pretty Secure
 
To Graph or Not to Graph Knowledge Graph Architectures and LLMs
To Graph or Not to Graph Knowledge Graph Architectures and LLMsTo Graph or Not to Graph Knowledge Graph Architectures and LLMs
To Graph or Not to Graph Knowledge Graph Architectures and LLMs
 
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024
 
AI revolution and Salesforce, Jiří Karpíšek
AI revolution and Salesforce, Jiří KarpíšekAI revolution and Salesforce, Jiří Karpíšek
AI revolution and Salesforce, Jiří Karpíšek
 
Intelligent Gimbal FINAL PAPER Engineering.pdf
Intelligent Gimbal FINAL PAPER Engineering.pdfIntelligent Gimbal FINAL PAPER Engineering.pdf
Intelligent Gimbal FINAL PAPER Engineering.pdf
 
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualitySoftware Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
 
AI presentation and introduction - Retrieval Augmented Generation RAG 101
AI presentation and introduction - Retrieval Augmented Generation RAG 101AI presentation and introduction - Retrieval Augmented Generation RAG 101
AI presentation and introduction - Retrieval Augmented Generation RAG 101
 
Speed Wins: From Kafka to APIs in Minutes
Speed Wins: From Kafka to APIs in MinutesSpeed Wins: From Kafka to APIs in Minutes
Speed Wins: From Kafka to APIs in Minutes
 
Powerful Start- the Key to Project Success, Barbara Laskowska
Powerful Start- the Key to Project Success, Barbara LaskowskaPowerful Start- the Key to Project Success, Barbara Laskowska
Powerful Start- the Key to Project Success, Barbara Laskowska
 
Salesforce Adoption – Metrics, Methods, and Motivation, Antone Kom
Salesforce Adoption – Metrics, Methods, and Motivation, Antone KomSalesforce Adoption – Metrics, Methods, and Motivation, Antone Kom
Salesforce Adoption – Metrics, Methods, and Motivation, Antone Kom
 

Core Data in Modern Times