22 Nov 2023
Certainly! Here are scenarios for each of the four types of RPC:
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Unary RPC: This is the simplest form of RPC where the client sends a single request to the server and receives a single response in return. It is a traditional request-response model.
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Scenario 1: Simple Math Operation
- Client: Sends a request to the server with two numbers and an operation (addition, subtraction, etc.).
- Server: Performs the requested operation and sends the result back to the client.
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Scenario 2: User Authentication
- Client: Sends user credentials (username and password) to the server for authentication.
- Server: Validates the credentials and responds with a success or failure message.
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Scenario 3: Data Retrieval
- Client: Requests information about a specific entity from the server (e.g., requesting details of a user).
- Server: Retrieves the requested data from the database and sends it back to the client.
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Scenario 4: File Download
- Client: Requests a file from the server.
- Server: Reads the file from storage and sends it to the client.
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Server Streaming RPC: In this type of RPC, the client sends a single request to the server, but the server can stream multiple responses back to the client. The client reads the responses as they arrive.
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Scenario 1: Live Data Feed
- Client: Requests real-time stock prices for a list of symbols.
- Server: Streams continuous updates of stock prices back to the client.
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Scenario 2: Weather Forecast
- Client: Asks for weather information for a specific location.
- Server: Streams hourly weather updates for the requested location.
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Scenario 3: Log Monitoring
- Client: Requests server logs for a specific time range.
- Server: Streams log entries to the client as they match the requested criteria.
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Scenario 4: Video Streaming
- Client: Requests a video stream from the server.
- Server: Streams video frames to the client in response to the request.
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Client Streaming RPC: Here, the client can stream multiple requests to the server, and the server responds with a single response. This is useful when the client needs to send a large amount of data to the server.
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Scenario 1: Batch Data Upload
- Client: Streams a large dataset to the server for processing.
- Server: Receives and processes the data, then sends a response.
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Scenario 2: Voice Recording
- Client: Streams audio data to the server for real-time speech recognition.
- Server: Processes the incoming audio stream and sends back recognized text.
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Scenario 3: Sensor Data Collection
- Client: Streams sensor data (e.g., from IoT devices) to the server.
- Server: Aggregates and analyzes the incoming sensor data, then sends a summary.
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Scenario 4: Continuous User Input
- Client: Streams user input (e.g., mouse movements) to the server for a live interactive application.
- Server: Processes the input and sends back updates to the client.
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Bidirectional Streaming RPC: In bidirectional streaming, both the client and server can send a stream of messages to each other. This allows for more interactive communication where both sides can independently send messages.
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Scenario 1: Chat Application
- Client: Sends messages to the server, and also receives messages from other clients in real-time.
- Server: Manages the bidirectional stream of messages between clients.
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Scenario 2: Online Collaboration
- Client: Sends and receives collaborative edits in real-time.
- Server: Facilitates bidirectional communication for a shared document editing session.
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Scenario 3: Multiplayer Game
- Client: Exchanges real-time game events with the server and other players.
- Server: Orchestrates the bidirectional flow of game events between players.
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Scenario 4: Remote Control
- Client: Sends control commands to a remote device and receives status updates.
- Server: Listens for commands and sends back the current state of the remote device.
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