Scenario B: An e-commerce app with a Node.js container (backend), a React container (frontend), and a PostgreSQL container (database).
Identify the key components (services) in your scenario (e.g., frontend, backend, database).
SSH authentication provides secure, encrypted access to remote systems and services, replacing insecure protocols like Telnet with cryptographic key pairs for authentication. It enables safe remote command execution, file transfers, and server management over untrusted networks without exposing passwords.
SSH (Secure Shell) emerged as a replacement for vulnerable protocols, leveraging public-key cryptography where a private key remains local while a public key verifies identity on the server. The authentication flow uses asymmetric encryption to confirm access without transmitting credentials over the network.
---Sequence diagram showing the complete lifecycle of an admin user from login to logout, including all CRUD operations. This format is perfect for showing the temporal flow and interactions between components.
🔵 Authentication Phase (Steps 1-6)
- User enters credentials
- System validates and creates claims (including "Admin" role)
- Token/cookie is generated and sent to user
https://www.perplexity.ai/search/level-layers-functionality-tec-XUGF.P3OQ222h9LUWsYxIw#3
"Supplement with specific repositories for complex queries" means that besides having a general, often generic repository for simple CRUD operations, you create specialized repository classes to handle more elaborate and performance-sensitive data retrieval needs that don't fit well into simple CRUD patterns. These specialized repositories encapsulate complex querying logic, using techniques like joins, projections, or raw SQL for efficiency.
- Specific Repository for Complex Queries
- For example, you might have a generic
IRepository<T>for basic CRUD, but also anIInvoiceRepositorywith methods like:
- For example, you might have a generic
public interface IInvoiceRepository : IRepository
| [AttributeUsage(AttributeTargets.Property)] | |
| public class UpperCaseAttribute : Attribute | |
| { | |
| } | |
| public static class AttributeProcessor | |
| { | |
| public static void ApplyUpperCase(object obj) | |
| { |
| using System; | |
| using System.Collections.Generic; | |
| using System.IO; | |
| using System.Security.Cryptography; | |
| using System.Text; | |
| using System.Threading.Tasks; | |
| using iText.Kernel.Exceptions; | |
| using iText.Kernel.Pdf; | |
| using iText.Kernel.Pdf.Canvas.Draw; | |
| using iText.Layout; |
| using System; | |
| using System.Collections.Generic; | |
| using System.IO; | |
| using System.Text; | |
| using iText.Kernel.Geom; | |
| using iText.Kernel.Pdf; | |
| using iText.Kernel.Pdf.Canvas.Draw; | |
| using iText.Layout; | |
| using iText.Layout.Element; | |
| using iText.Layout.Properties; |