gRPC-Fullstack

In this talk, Valentino will showcase a full-stack application fetching data from Spanner and serving it in a cloud-native webapp.
We will go through a hands-on gRPC connection setup, using Spanners native gRPC connectivity and see how this impacts the speed and reliability of our service.
Finally, we will see how the frontend application can control the data flow using backpressure and intelligent load balancing to maximise performance.

Transcript

2. Inspiration • Idea during a conference • Obsession with speed and performance • RPC
3. Data representation?
4. Architecture
5. Spanner • Fully managed rela=onal database • Unlimited scale • Strong consistency • High availability
6. How does it work?
7. Interleaving • Physically co-locates child rows with parent rows
8. RPC • Procedures executed in different address space coded as normal procedure call • Programmer does not explicitly code the details of the remote interaction • Typically implemented via a request-response message- passing system
10. Representational state transfer • Standard way of communication between backend-frontend services today • RESTful systems - stateless and separate concerns of client and server • A request usually consists of: HTTP verb, header, path to resource, optional message body
11. REST vs RPC? • RPC designed for actions, REST is resource-centric • RPC executes procedures and commands with ease, works on conectionless or connection- oriented protocols (TCP/UDP) • REST uses HTTP to communicate (application level protocol)
12. gRPC • Open source high performance RPC • Runs in any environment • Efficiently connect services in and across data centers with pluggable support for load balancing, tracing health checking and authentication • Uses HTTP/2 for transportation and Protocol Buffers as the interface description language
13. Load balancing • Proxy - distributes the RPC call to one of the available backend servers • Client-side - client aware of multiple backend servers and chooses one
14. Protocol Buffers • Googles interchange format • Mechanism for serialising destructured data • Versioning
15. Example • Service • RPC • Message
16. Architecture?
17. Live Demo!