Provide foreground SAVE support

.gitignore

@@ -11,6 +11,7 @@ _ReSharper.*
 Mono/
 *.sln.ide
 *.rdb
+*.aof
 *.orig
 redis-cli.exe
 Redis Configs/*.dat

StackExchange.Redis.Tests/Issues/BgSaveResponse.cs

@@ -11,12 +11,17 @@ namespace StackExchange.Redis.Tests.Issues
     public class BgSaveResponse : TestBase
     {
         [Test]
-        public void ShouldntThrowException()
+#pragma warning disable 0618
+        [TestCase(SaveType.ForegroundSave)]
+#pragma warning restore 0618
+        [TestCase(SaveType.BackgroundSave)]
+        [TestCase(SaveType.BackgroundRewriteAppendOnlyFile)]
+        public void ShouldntThrowException(SaveType saveType)
         {
             using (var conn = Create(null, null, true))
             {
                 var Server = GetServer(conn);
-                Server.Save(SaveType.BackgroundSave);
+                Server.Save(saveType);
             }
         }
     }

StackExchange.Redis/StackExchange/Redis/RedisServer.cs

@@ -597,6 +597,9 @@ Message GetSaveMessage(SaveType type, CommandFlags flags = CommandFlags.None)
             {
                 case SaveType.BackgroundRewriteAppendOnlyFile: return Message.Create(-1, flags, RedisCommand.BGREWRITEAOF);
                 case SaveType.BackgroundSave: return Message.Create(-1, flags, RedisCommand.BGSAVE);
+#pragma warning disable 0618
+                case SaveType.ForegroundSave: return Message.Create(-1, flags, RedisCommand.SAVE);
+#pragma warning restore 0618
                 default:  throw new ArgumentOutOfRangeException("type");
             }
         }
@@ -607,6 +610,9 @@ ResultProcessor<bool> GetSaveResultProcessor(SaveType type)
             {
                 case SaveType.BackgroundRewriteAppendOnlyFile: return ResultProcessor.DemandOK;
                 case SaveType.BackgroundSave: return ResultProcessor.BackgroundSaveStarted;
+#pragma warning disable 0618
+                case SaveType.ForegroundSave: return ResultProcessor.DemandOK;
+#pragma warning restore 0618
                 default: throw new ArgumentOutOfRangeException("type");
             }
         }

StackExchange.Redis/StackExchange/Redis/SaveType.cs

-namespace StackExchange.Redis
+using System;
+namespace StackExchange.Redis
 {
     /// <summary>
-    /// The type of save operation to perform; note that foreground saving is not offered, as this is basically never a good thing to do through regular code.
+    /// The type of save operation to perform
     /// </summary>
     public enum SaveType
     {
@@ -15,5 +16,11 @@ public enum SaveType
         /// </summary>
         /// <remarks>http://redis.io/commands/bgsave</remarks>
         BackgroundSave,
+        /// <summary>
+        /// Save the DB in foreground. This is almost never a good thing to do, and could cause significant blocking. Only do this if you know you need to save
+        /// </summary>
+        /// <remarks>http://redis.io/commands/save</remarks>
+        [Obsolete("Saving on the foreground can cause significant blocking; use with extreme caution")]
+        ForegroundSave
     }
 }