DESIGN / 012
Open / Closed Principle
Designing for extension without reopening stable code.
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Featured / Design principles
Single Responsibility Principle
Only one reason to change.
2025.06.28 / C# / SOLID / 14 MIN
01 public class ReportService
02 {
03 private readonly ICache _cache;
04 private readonly ILogger _logger;
05
06 public Report Get(string id)
07 {
08 return _cache.Get(id);
09 }
10 }
02 {
03 private readonly ICache _cache;
04 private readonly ILogger _logger;
05
06 public Report Get(string id)
07 {
08 return _cache.Get(id);
09 }
10 }
DATA / 018
SQL Server Performance Notes
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SYSTEMS / ARCHIVE
Linux Systems Archive
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ARCHITECTURE / 016
System Design Lessons
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