Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Real-time API's with GraphQL
Search
Sandeep Singh
October 14, 2018
Research
1
340
Real-time API's with GraphQL
Sandeep Singh
October 14, 2018
Tweet
Share
More Decks by Sandeep Singh
See All by Sandeep Singh
NDC OSLO 2017
initialspark
1
180
DDD 12 - Goodbye REST; Hello GraphQL
initialspark
0
1.2k
DDDSouthwest - JavascriptServices: Building Single Page Applications with ASP.NET Core
initialspark
0
84
NDC London 2017 - Bundling Your front end with webpack
initialspark
0
150
Other Decks in Research
See All in Research
Computational OT #1 - Monge and Kantorovitch
gpeyre
0
230
心理言語学の視点から再考する言語モデルの学習過程
chemical_tree
2
540
Type Theory as a Formal Basis of Natural Language Semantics
daikimatsuoka
1
270
2025/7/5 応用音響研究会招待講演@北海道大学
takuma_okamoto
1
160
在庫管理のための機械学習と最適化の融合
mickey_kubo
3
1.1k
20250725-bet-ai-day
cipepser
2
370
データサイエンティストの就労意識~2015→2024 一般(個人)会員アンケートより
datascientistsociety
PRO
0
980
Large Language Model Agent: A Survey on Methodology, Applications and Challenges
shunk031
14
9.6k
Combinatorial Search with Generators
kei18
0
590
NLP2025参加報告会 LT資料
hargon24
1
350
Agentic AIとMCPを利用したサービス作成入門
mickey_kubo
0
410
研究テーマのデザインと研究遂行の方法論
hisashiishihara
5
1.6k
Featured
See All Featured
Faster Mobile Websites
deanohume
309
31k
KATA
mclloyd
32
14k
Thoughts on Productivity
jonyablonski
69
4.8k
4 Signs Your Business is Dying
shpigford
184
22k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
283
13k
The Cost Of JavaScript in 2023
addyosmani
53
8.8k
Raft: Consensus for Rubyists
vanstee
140
7.1k
Testing 201, or: Great Expectations
jmmastey
45
7.6k
Making Projects Easy
brettharned
117
6.3k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Fireside Chat
paigeccino
39
3.6k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
33
2.4k
Transcript
Real-Time API’s with GraphQL Sandeep Singh initialspark.co.uk @initial_spark
◦ What is GraphQL ? ◦ Why it exists and
the problems it aims to solve ? ◦ GraphQL core concepts ◦ Real-Time API’s – the what, why and how Agenda @initial_spark
GraphQL is a declarative query language for your API @initial_spark
@initial_spark
◦Built on specification ◦Hierarchical ◦Client‐driven ◦Strongly typed What is GraphQL?
@initial_spark
Q: Why GraphQL? @initial_spark
◦Efficiency ◦Predictability ◦Versioning ◦Caching ◦Security, tooling, documentation and more Modern
API considerations @initial_spark
Let’s look at an example… @initial_spark
@initial_spark
Efficiency @initial_spark
Efficiency @initial_spark GraphQL API Mongo DB AWS Lamba REST API
SOAP Service HTTP TCP/IP HTTP SOAP Optimisted data for each channel
Versioning Evolution @initial_spark
Tooling & DX @initial_spark
Introspection { __schema{ types{ name } } } • Query
schema, types and fields • Build tools o Auto complete / Validate (graphiql) o Code generation o Documentation @initial_spark
GraphQL Core Concepts @initial_spark
Schema Type System Query Language GraphQL Core Concepts @initial_spark
GraphQL Core Concepts - Resolvers @initial_spark
Schema Type System Query Language o Operations • Queries –
read • Mutations – write • Subscriptions – real-time o Alias o Fragments GraphQL Core Concepts @initial_spark
Lets build a GraphQL API! @initial_spark
@initial_spark
◦ Unpredictable Execution ◦ Handling File Upload ◦ Cache at
Network Level ◦ Authentication/Authorisation GraphQL - Challenges @initial_spark
Q:What about Real-time data? @initial_spark
@initial_spark Chat Notifications Live feed Collaborative
◦ Pull ◦ Polling - Short/Long - HTTP ◦ Push
◦ Subscriptions - Event driven ◦ Live queries - Infinitely fast/cheap polling (State driven) Real-Time API’s @initial_spark
◦ Real time events ◦ Idea: Server pushes data to
client when something ‘interesting’ occurs ◦ The client defines the shape of the data pushed to it Subscriptions – Event Based @initial_spark
◦ The initial state is large, but the incremental change
sets are small ◦ You care about low-latency updates in the case of specific events, e.g. chat application where users expect to receive new messages in a matter of seconds Subscriptions – When to use @initial_spark
Subscriptions Implementation @initial_spark
Subscriptions (Redis, Kafka, MQ, own?) @initial_spark Request / Response Bi-Directional
Transport (SSE, websockets etc) HTTP Subscription(s) GraphQL Domain Events Events
@initial_spark
Let’s look at another example… @initial_spark
@initial_spark GraphQL API Run Mutation Trigger Subscription subscription {patientDischarged{…}} PAS
View (Admin) Ward View (Nurse)
Lets have some fun with subscriptions @initial_spark
Advanced features – Enrich payload @initial_spark
@initial_spark There isn’t such thing as a free lunch…
◦ Scaling state is hard ◦ Who’s subscribed/ how do
we send messages etc ◦ QOS ◦ Throttling ◦ Buffering Subscriptions - Challenges @initial_spark
◦ http://graphql.org/learn/ ◦ https://www.youtube.com/watch?v=bn8qsi8jVew - Lee Byron ◦ https://github.com/apollographql/apollo-client ◦
https://github.com/initialspark/real-time-apis-graphql ◦ https://www.graphqlhub.com/ ◦ https://www.youtube.com/watch?v=4_Bcw7BULC8 - Authentication Resources @initial_spark
Thank you ! You can find me at @initial_spark &
initialspark.co.uk