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+
+[[package]]
+name = "wrocrust-gql-talk"
+version = "0.1.0"
+dependencies = [
+ "async-graphql",
+ "async-graphql-axum",
+ "async-stream",
+ "axum",
+ "futures",
+ "serde",
+ "tokio",
+]
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/Cargo.toml b/talk-archive/2022-27-rust-and-graphql-for-backend/Cargo.toml
new file mode 100644
index 0000000..af1093f
--- /dev/null
+++ b/talk-archive/2022-27-rust-and-graphql-for-backend/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "wrocrust-gql-talk"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+axum = "0.5"
+tokio = { version = "1", features = ["full"] }
+serde = { version = "1", features = ["derive"] }
+
+async-graphql-axum = "4"
+async-graphql = { version = "4", features = ["tracing"] }
+
+futures = "0.3"
+async-stream = "0.3"
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/src/data.rs b/talk-archive/2022-27-rust-and-graphql-for-backend/src/data.rs
new file mode 100644
index 0000000..331d170
--- /dev/null
+++ b/talk-archive/2022-27-rust-and-graphql-for-backend/src/data.rs
@@ -0,0 +1,84 @@
+use crate::graphql::{Brand, Car, User};
+
+pub(crate) type Users = Vec<User>;
+pub(crate) type Cars = Vec<Car>;
+
+pub(crate) fn users() -> Users {
+    vec![
+        User {
+            id: 0,
+            name: "Json".to_string(),
+            surname: "Bourne".to_string(),
+            age: 19,
+            car_id: 4,
+        },
+        User {
+            id: 1,
+            name: "Adam".to_string(),
+            surname: "Adams".to_string(),
+            age: 28,
+            car_id: 3,
+        },
+        User {
+            id: 2,
+            name: "Cameron".to_string(),
+            surname: "Nelson".to_string(),
+            age: 71,
+            car_id: 2,
+        },
+        User {
+            id: 3,
+            name: "Dawn".to_string(),
+            surname: "Lauer".to_string(),
+            age: 21,
+            car_id: 1,
+        },
+        User {
+            id: 4,
+            name: "Billy".to_string(),
+            surname: "Blaser".to_string(),
+            age: 66,
+            car_id: 0,
+        },
+    ]
+}
+
+pub(crate) fn cars() -> Cars {
+    vec![
+        Car {
+            id: 0,
+            brand: Brand::Ford,
+            model: "Focus".to_string(),
+            year: 2015,
+            owner_id: 4,
+        },
+        Car {
+            id: 1,
+            brand: Brand::Fiat,
+            model: "Stilo".to_string(),
+            year: 2001,
+            owner_id: 3,
+        },
+        Car {
+            id: 2,
+            brand: Brand::Opel,
+            model: "Astra".to_string(),
+            year: 2011,
+            owner_id: 2,
+        },
+        Car {
+            id: 3,
+            brand: Brand::Ford,
+            model: "Mondeo".to_string(),
+            year: 2018,
+            owner_id: 1,
+        },
+        Car {
+            id: 4,
+            brand: Brand::Fiat,
+            model: "Panda".to_string(),
+            year: 2005,
+            owner_id: 0,
+        },
+    ]
+}
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/src/graphql.rs b/talk-archive/2022-27-rust-and-graphql-for-backend/src/graphql.rs
new file mode 100644
index 0000000..1e9fcc3
--- /dev/null
+++ b/talk-archive/2022-27-rust-and-graphql-for-backend/src/graphql.rs
@@ -0,0 +1,147 @@
+use crate::data::{self, Cars, Users};
+use async_graphql::*;
+use async_stream::stream;
+use futures::stream::Stream;
+use tokio::sync::broadcast;
+
+pub type GqlSchema = Schema<Query, Mutation, Subscription>;
+
+pub fn schema() -> GqlSchema {
+    let (tx, _) = broadcast::channel(1);
+    Schema::build(
+        Query,
+        Mutation {
+            users_tx: tx.clone(),
+        },
+        Subscription { users_tx: tx },
+    )
+    .data(data::users())
+    .data(data::cars())
+    .finish()
+}
+
+/// The root query type
+#[derive(Description)]
+pub struct Query;
+
+#[Object(use_type_description)] // to get the doc from Query type
+impl Query {
+    /// Get all users registered in the service
+    async fn users<'ctx>(
+        &self,
+        ctx: &Context<'ctx>,
+        #[graphql(desc = "Query at most this amount of users", default = 15)] limit: usize,
+    ) -> Result<&'ctx [User]> {
+        let users = ctx.data::<Users>()?;
+        let limit = std::cmp::min(limit, users.len());
+        Ok(&users[..limit])
+    }
+
+    /// Get all cars registered in the service
+    async fn cars<'ctx>(&self, ctx: &Context<'ctx>) -> Result<&'ctx [Car]> {
+        let cars = ctx.data::<Cars>()?;
+        Ok(&cars[..])
+    }
+}
+
+pub struct Mutation {
+    users_tx: broadcast::Sender<User>,
+}
+
+#[Object]
+impl Mutation {
+    /// Notify all listeners that the user needs help
+    async fn call_for_help<'ctx>(
+        &self,
+        ctx: &Context<'ctx>,
+        #[graphql(desc = "Id of the user calling for help")] user_id: usize,
+    ) -> Result<&'ctx User> {
+        let users = ctx.data::<Users>()?;
+        let user = users.iter().find(|u| u.id == user_id).ok_or("Not found")?;
+
+        self.users_tx.send(user.clone())?;
+        Ok(user)
+    }
+}
+
+pub struct Subscription {
+    users_tx: broadcast::Sender<User>,
+}
+
+#[Subscription]
+impl Subscription {
+    /// Listen to the users' help calls
+    async fn subscribe_for_help_calls(&self) -> impl Stream<Item = User> {
+        let mut users_rx = self.users_tx.subscribe();
+        stream! {
+            while let Ok(user) = users_rx.recv().await {
+                yield user;
+            }
+        }
+    }
+}
+
+/// Representation of the user
+#[derive(SimpleObject, Clone)]
+#[graphql(complex)]
+pub struct User {
+    /// User's id
+    pub id: usize,
+    /// User's name
+    pub name: String,
+    /// User's surname
+    pub surname: String,
+    /// User's age
+    pub age: u32,
+    /// User's car id
+    #[graphql(skip)]
+    pub car_id: usize,
+}
+
+#[ComplexObject]
+impl User {
+    /// User's car
+    async fn car<'ctx>(&self, ctx: &Context<'ctx>) -> Result<&'ctx Car> {
+        let cars = ctx.data::<Cars>()?;
+        cars.iter()
+            .find(|c| c.id == self.car_id)
+            .ok_or_else(|| "Not found".into())
+    }
+}
+
+/// All the car brands supported by service
+#[derive(Enum, Description, Eq, PartialEq, Clone, Copy)]
+pub enum Brand {
+    Fiat,
+    Ford,
+    Opel,
+}
+
+/// Representation of the car
+#[derive(Description, SimpleObject)]
+#[graphql(complex)]
+pub struct Car {
+    /// Car's id
+    pub id: usize,
+    /// Car's brand
+    pub brand: Brand,
+    /// Car's model
+    pub model: String,
+    /// Car's production year
+    pub year: u32,
+    /// Car's owner id
+    #[graphql(skip)]
+    pub owner_id: usize,
+}
+
+#[ComplexObject]
+impl Car {
+    /// Car's owner
+    async fn owner<'ctx>(&self, ctx: &Context<'ctx>) -> Result<&'ctx User> {
+        let users = ctx.data::<Users>()?;
+        users
+            .iter()
+            .find(|u| u.id == self.owner_id)
+            .ok_or_else(|| "Not found".into())
+    }
+}
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/src/main.rs b/talk-archive/2022-27-rust-and-graphql-for-backend/src/main.rs
new file mode 100644
index 0000000..ca9bdb4
--- /dev/null
+++ b/talk-archive/2022-27-rust-and-graphql-for-backend/src/main.rs
@@ -0,0 +1,42 @@
+use async_graphql::http::{playground_source, GraphQLPlaygroundConfig};
+use async_graphql_axum::{GraphQLRequest, GraphQLResponse, GraphQLSubscription};
+use axum::{
+    response::{self, IntoResponse},
+    routing::get,
+    Extension, Router,
+};
+use std::net::SocketAddr;
+
+pub mod data;
+pub mod graphql;
+
+use graphql::GqlSchema;
+
+async fn graphql_handler(schema: Extension<GqlSchema>, req: GraphQLRequest) -> GraphQLResponse {
+    schema.execute(req.into_inner()).await.into()
+}
+
+async fn graphql_playground() -> impl IntoResponse {
+    response::Html(playground_source(
+        GraphQLPlaygroundConfig::new("/graphql").subscription_endpoint("/ws"),
+    ))
+}
+
+#[tokio::main]
+async fn main() {
+    let gql_schema = graphql::schema();
+
+    let app = Router::new()
+        .route("/graphql", get(graphql_playground).post(graphql_handler))
+        .route("/ws", GraphQLSubscription::new(gql_schema.clone()))
+        .layer(Extension(gql_schema));
+
+    let addr = SocketAddr::from(([127, 0, 0, 1], 3000));
+
+    println!("listening on {}", addr);
+
+    axum::Server::bind(&addr)
+        .serve(app.into_make_service())
+        .await
+        .unwrap();
+}
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/talk.pdf b/talk-archive/2022-27-rust-and-graphql-for-backend/talk.pdf
new file mode 100644
index 0000000..46f9bf5
Binary files /dev/null and b/talk-archive/2022-27-rust-and-graphql-for-backend/talk.pdf differ
diff --git a/talk-archive/2022-27-rust-and-graphql-for-backend/talk.tex b/talk-archive/2022-27-rust-and-graphql-for-backend/talk.tex
new file mode 100644
index 0000000..01ac38a
--- /dev/null
+++ b/talk-archive/2022-27-rust-and-graphql-for-backend/talk.tex
@@ -0,0 +1,256 @@
+\documentclass{beamer}
+\usepackage{minted}
+\usepackage{forest}
+
+\title{Rust and GraphQL for backend}
+\subtitle{Schema creation and basic features}
+\author{Maciek Zwoliński}
+\date{June 2022}
+
+\begin{document}
+  \frame {
+    \maketitle
+  }
+  \note {
+    GraphQL is a powerful and strongly typed way to expose your services for the clients. It is more and more often seen in various backends.
+
+    During this talk we will learn what is graphql and how to use it. We will play with it's basic features and try to create our own graphs of data.
+  }
+  \note {
+    Not-really-sure-what developer trying to take Rust for everything. I'm currently working in SatRev, developing ground and flight software for managing nanosatellites.
+    Also cats, linux and pizza lover.
+  }
+  \note {
+    GraphQL is a query language for describing the resources you want to get and also all the machinery for executing those queries in your backend.
+    It was created by facebook for their internal use and then open sourced in 2015.
+    Since then it gained some popularity and was implemented in many popular programming languages.
+  }
+  \begin{frame}{Graphql Schema}
+    \centering
+    \begin{forest}
+      [Root
+        [Query
+          [users]
+          [userById]
+        ]
+        [Mutation (optional)
+          [addUser]
+          [removeUser]
+        ]
+        [Subscription (optional)
+          [userRegistered]
+        ]
+      ]
+    \end{forest}
+  \end{frame}
+  \begin{frame}[fragile]
+    \scriptsize
+    \begin{minted}{rust}
+        struct User {
+            id: usize,
+            name: String,
+            surname: String,
+            age: u32,
+            car_id: Optional<usize>,  // references car.id
+        }
+
+        enum Brand {
+            Fiat,
+            Ford,
+            Opel,
+        }
+
+        struct Car {
+            id: usize,
+            brand: Brand,
+            model: String,
+            year: u32,
+            owner_id: usize,  // references user.id
+        }
+    \end{minted}
+  \end{frame}
+  \note {
+    Do you know REST?
+
+    Consider having some resources, let's say users and cars. We could define them as follows:
+
+    We're gonna use Rust for our definitions. We'll also make it look like if we had some relational database under the hood even tho there will be none during this talk :)
+
+    We'd probably want to have one to many relation for the user and his cars but let's just keep it simple at this moment.
+  }
+  \begin{frame}[fragile]{REST API}{Overfetching}
+    \begin{columns}
+        \begin{column}{0.48\textwidth}
+          \scriptsize
+          \begin{minted}[autogobble]{javascript}
+              GET /users -> [
+                {
+                  "id": 0,  // this is unused
+                  "name": "Will",
+                  "surname": "Smith",
+                  "age": 32,
+                  "car_id": null  // so is this
+                },
+                ...
+              ]
+          \end{minted}
+        \end{column}
+        \begin{column}{0.48\textwidth}
+          Users:
+          \begin{itemize}
+            \item Will Smith, 32 years
+            \item ...
+          \end{itemize}
+        \end{column}
+    \end{columns}
+  \end{frame}
+  \begin{frame}[fragile]{REST API}{Underfetching}
+    \begin{columns}
+        \begin{column}{0.48\textwidth}
+          \scriptsize
+          \begin{minted}[autogobble]{javascript}
+              GET /users -> [
+                {
+                  "name": "Will",
+                  "car_id": 1,
+                  ...  // unused
+                },
+                {
+                  "name": "Agnieszka",
+                  "car_id": 3,
+                  ...  // unused
+                },
+                ...
+              ]
+              GET /cars/1 -> {
+                "brand": "Opel",
+                "model": "Astra",
+                "year": 1999  // unused
+              }
+              GET /cars/3 -> {
+                "brand": "Ford",
+                "model": "Focus",
+                "year": 2010  // unused
+              }
+          \end{minted}
+        \end{column}
+        \begin{column}{0.48\textwidth}
+          Users:
+          \begin{itemize}
+            \item Will, Opel Astra
+            \item Agnieszka, Ford Focus
+            \item ...
+          \end{itemize}
+        \end{column}
+    \end{columns}
+  \end{frame}
+  \begin{frame}[fragile]{GraphQL API}{Declarative fetching}
+    \begin{columns}
+        \begin{column}{0.2\textwidth}
+          \scriptsize
+          \begin{minted}[autogobble]{javascript}
+              query {
+                users {
+                  name,
+                  surname,
+                  age
+                }
+              }
+
+
+
+              query {
+                users {
+                  name,
+                  car {
+                    brand,
+                    model
+                  }
+                }
+              }
+
+          \end{minted}
+        \end{column}
+        \begin{column}{0.35\textwidth}
+          \scriptsize
+          \begin{minted}[autogobble]{javascript}
+            "users": [
+              {
+                "name": "Will",
+                "surname": "Smith",
+                "age": 32,
+              },
+              ...
+            ]
+
+
+            "users": [
+              {
+                "name": "Will",
+                "car": {
+                  "brand": "Opel"
+                  "model": "Astra"
+                }
+              },
+              ...
+            ]
+          \end{minted}
+        \end{column}
+        \begin{column}{0.44\textwidth}
+          \footnotesize
+          Users:
+          \begin{itemize}
+            \item Will Smith, 32 years
+            \item ...
+          \end{itemize}
+          \vspace{5.5em}
+          Users:
+          \begin{itemize}
+            \item Will, Opel Astra
+            \item ...
+          \end{itemize}
+          \vspace{5em}
+        \end{column}
+    \end{columns}
+  \end{frame}
+  \begin{frame}[fragile]{REST API}{Overfetching/Underfetching}
+    \begin{minted}{javascript}
+      GET /users_with_cars ?
+
+      GET /users?fields=name,surname ?
+
+      GET /users?cars=true&fields=name,surname
+          &car_fields=brand,model ?
+    \end{minted}
+  \end{frame}
+  \note {
+    Should we make an endpoint users\_with\_cars which will have different model of what it returns? Or maybe cars\_with\_owners would better suit our potential api consumers?
+
+    Or maybe we could add optional query params to control how fetched resources look like?
+
+    But this would be a complete mess when writing api documentation and having many different possible schemas returned from one endpoint
+  }
+  \frame {
+    Server side crates:
+
+    \quad- \underline{async-graphql}
+
+    \quad- juniper
+
+    \vspace{0.5em}
+
+    \small{both integrates well with popular backend crates like actix-web, axum, rocket, warp...}
+
+    \vspace{2em}
+
+    Client side crates:
+
+    \quad- graphql\_client
+
+    \quad- cynic
+
+    \vspace{0.5em}
+
+    \small{you can choose from different designs of strong typing but subscriptions are not quite there yet}
+  }
+\end{document}