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Service Roles

View Service Graph to visualize request flows.

Service Language Description
adservice Java Provides text ads based on given context words.
cartservice DotNet Stores the items in the user's shopping cart in Redis and retrieves it.
checkoutservice Go Retrieves user cart, prepares order and orchestrates the payment, shipping and the email notification.
currencyservice C++ Converts one money amount to another currency. Uses real values fetched from European Central Bank. It's the highest QPS service.
emailservice Ruby Sends users an order confirmation email (mock).
featureflagservice Erlang/Elixir CRUD feature flag service to demonstrate various scenarios like fault injection & how to emit telemetry from a feature flag reliant service.
frontend JavaScript Exposes an HTTP server to serve the website. Does not require signup/login and generates session IDs for all users automatically.
loadgenerator Python/Locust Continuously sends requests imitating realistic user shopping flows to the frontend.
paymentservice JavaScript Charges the given credit card info (mock) with the given amount and returns a transaction ID.
productcatalogservice Go Provides the list of products from a JSON file and ability to search products and get individual products.
quoteservice PHP Calculates the shipping costs, based on the number of items to be shipped.
recommendationservice Python Recommends other products based on what's given in the cart.
shippingservice Rust Gives shipping cost estimates based on the shopping cart. Ships items to the given address (mock).