stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache.Valkey/ValkeyProvcacheStore.Get.cs

@@ -0,0 +1,55 @@
+using Microsoft.Extensions.Logging;
+using StackExchange.Redis;
+using System.Diagnostics;
+using System.Text.Json;
+
+namespace StellaOps.Provcache.Valkey;
+
+public sealed partial class ValkeyProvcacheStore
+{
+    public async ValueTask<ProvcacheLookupResult> GetAsync(string veriKey, CancellationToken cancellationToken = default)
+    {
+        var sw = Stopwatch.StartNew();
+        cancellationToken.ThrowIfCancellationRequested();
+
+        try
+        {
+            var db = await GetDatabaseAsync(cancellationToken).ConfigureAwait(false);
+            var redisKey = BuildKey(veriKey);
+
+            var value = await db.StringGetAsync(redisKey).ConfigureAwait(false);
+            sw.Stop();
+
+            if (value.IsNullOrEmpty)
+            {
+                _logger.LogDebug("Cache miss for VeriKey {VeriKey} in {ElapsedMs}ms", veriKey, sw.Elapsed.TotalMilliseconds);
+                return ProvcacheLookupResult.Miss(sw.Elapsed.TotalMilliseconds);
+            }
+
+            var entry = JsonSerializer.Deserialize<ProvcacheEntry>((string)value!, _jsonOptions);
+            if (entry is null)
+            {
+                _logger.LogWarning("Failed to deserialize cache entry for VeriKey {VeriKey}", veriKey);
+                return ProvcacheLookupResult.Miss(sw.Elapsed.TotalMilliseconds);
+            }
+
+            if (_options.SlidingExpiration)
+            {
+                var ttl = entry.ExpiresAt - _timeProvider.GetUtcNow();
+                if (ttl > TimeSpan.Zero)
+                {
+                    await db.KeyExpireAsync(redisKey, ttl).ConfigureAwait(false);
+                }
+            }
+
+            _logger.LogDebug("Cache hit for VeriKey {VeriKey} in {ElapsedMs}ms", veriKey, sw.Elapsed.TotalMilliseconds);
+            return ProvcacheLookupResult.Hit(entry, ProviderName, sw.Elapsed.TotalMilliseconds);
+        }
+        catch (Exception ex)
+        {
+            sw.Stop();
+            _logger.LogError(ex, "Error getting cache entry for VeriKey {VeriKey}", veriKey);
+            return ProvcacheLookupResult.Miss(sw.Elapsed.TotalMilliseconds);
+        }
+    }
+}