#12 Caching photostocks

Added caching to stocks data

Co-Authored-By: Grigory Sazanov  <56090134+SazanovGrigory@users.noreply.github.com>

Client/Components/LastPostedTracks.razor

@@ -23,7 +23,6 @@
                 <td>@GetPlaylistNameFromId(row.PlaylistId)</td>
                 <td>@row.Trackname</td>
                 <td>@row.Date.ToString("dd.MM.yyy HH:mm")</td>
-
             </tr>
         }
     </tbody>
@@ -32,7 +31,7 @@
 <br />
 
 @code {
-    string[] headings = { "ID", "MediaID", "OwnerID", "Playlist", "Trackname", "Date" };
+    string[] headings = { "ID", "MediaID", "OwnerID", "Playlist", "Trackname", "Date"};
 
     [Parameter]
     public IEnumerable<PostedTrack> PostedTracks { get; set; }

Server/Controllers/ConsolePhotostocksController.cs

@@ -7,7 +7,7 @@
 using Microsoft.EntityFrameworkCore;
 using HVMDash.Server.Context;
 using vkaudioposter_ef.parser;
-
+using Microsoft.Extensions.Caching.Memory;
 
 namespace HVMDash.Server.Controllers
 {
@@ -17,17 +17,35 @@ namespace HVMDash.Server.Controllers
     public class ConsolePhotostocksController : ControllerBase
     {
         private readonly ConsolePhotostockContext _context;
+        private readonly IMemoryCache memoryCache;
+        private readonly string cacheKey = "AllPhotostocks";
+
+        private readonly MemoryCacheEntryOptions cacheExpiryOptions = new MemoryCacheEntryOptions
+        {
+            AbsoluteExpiration = DateTime.Now.AddMinutes(5),
+            Priority = CacheItemPriority.High,
+            SlidingExpiration = TimeSpan.FromMinutes(2)
+        };
 
-        public ConsolePhotostocksController(ConsolePhotostockContext context)
+        public ConsolePhotostocksController(IMemoryCache memoryCache, ConsolePhotostockContext context)
         {
+            this.memoryCache = memoryCache;
             _context = context;
         }
 
         // GET: api/ConsolePhotostocks
         [HttpGet]
         public async Task<ActionResult<IEnumerable<ConsolePhotostock>>> GetPhotostocks()
         {
-            return await _context.Photostocks.ToListAsync();
+            List<ConsolePhotostock> stock1 = new List<ConsolePhotostock>();
+            if (!memoryCache.TryGetValue(cacheKey, out IEnumerable<ConsolePhotostock> stock))
+            {
+                 stock1 = await _context.Photostocks.ToListAsync();
+                memoryCache.Set(cacheKey, stock1, cacheExpiryOptions);
+                return stock1;
+            }
+            memoryCache.TryGetValue(cacheKey, out stock1);
+            return stock1;
         }
 
         // GET: api/ConsolePhotostocks/5
@@ -71,7 +89,7 @@ public async Task<IActionResult> PutConsolePhotostock(int id, ConsolePhotostock
                     throw;
                 }
             }
-
+            memoryCache.Remove(cacheKey);
             return NoContent();
         }
 
@@ -80,6 +98,7 @@ public async Task<IActionResult> PutConsolePhotostock(int id, ConsolePhotostock
         [HttpPost]
         public async Task<ActionResult<ConsolePhotostock>> PostConsolePhotostock(ConsolePhotostock consolePhotostock)
         {
+            memoryCache.Remove(cacheKey);
             _context.Photostocks.Add(consolePhotostock);
             await _context.SaveChangesAsync();
 
@@ -90,6 +109,7 @@ public async Task<ActionResult<ConsolePhotostock>> PostConsolePhotostock(Console
         [HttpDelete("{id}")]
         public async Task<IActionResult> DeleteConsolePhotostock(int id)
         {
+            memoryCache.Remove(cacheKey);
             var consolePhotostock = await _context.Photostocks.FindAsync(id);
             if (consolePhotostock == null)
             {