Added retry on failiure

Author: linkdotnet

docs/efcore/retry.md

@@ -0,0 +1,17 @@
+## Retry on failure
+Entity Framework Core supports automatic retry on failure when saving changes to the database. This can be useful when working with a database that is subject to transient failures, such as a database on Azure SQL Database. The examples uses SQL Server but other providers, like PostgreSQL, also support this feature.
+
+```csharp
+public void ConfigureServices(IServiceCollection services)
+{
+    services.AddDbContext<MyDbContext>(options =>
+        options.UseSqlServer("your_connection_string",
+            sqlServerOptions =>
+            {
+                sqlServerOptions.EnableRetryOnFailure(
+                    maxRetryCount: 3,
+                    maxRetryDelay: TimeSpan.FromSeconds(5),
+                    errorNumbersToAdd: null);
+            }));
+}
+```

mkdocs.yml

@@ -80,6 +80,7 @@ nav:
     - Define maximum length for strings: efcore/maxlength_strings.md
     - LoadAsync: efcore/loadasync.md
     - In Memory database with SQLite: efcore/in_memory_sqlite.md
+    - Retry on failure: efcore/retry.md
     - SplitQuery: efcore/splitquery.md
   - Logging:
     - logging/index.md