diff --git a/src/Api/Startup.cs b/src/Api/Startup.cs
index 8163ca006..914034f74 100644
--- a/src/Api/Startup.cs
+++ b/src/Api/Startup.cs
@@ -18,6 +18,8 @@ using Bit.Core.Repositories;
 using Bit.Core.Services;
 using Repos = Bit.Core.Repositories.SqlServer;
 using System.Text;
+using StackExchange.Redis.Extensions.Core;
+using StackExchange.Redis.Extensions.Protobuf;
 //using Loggr.Extensions.Logging;
 
 namespace Bit.Api
@@ -55,9 +57,16 @@ namespace Bit.Api
             ConfigurationBinder.Bind(Configuration.GetSection("GlobalSettings"), globalSettings);
             services.AddSingleton(s => globalSettings);
 
+            // Caching
+            ISerializer serializer = new ProtobufSerializer();
+            services.AddSingleton(s => serializer);
+            ICacheClient cacheClient = new StackExchangeRedisCacheClient(serializer,
+                globalSettings.Cache.ConnectionString, globalSettings.Cache.Database);
+            services.AddSingleton(s => cacheClient);
+
             // Repositories
-            services.AddSingleton<IUserRepository>(s => new Repos.UserRepository(globalSettings.SqlServer.ConnectionString));
-            services.AddSingleton<ICipherRepository>(s => new Repos.CipherRepository(globalSettings.SqlServer.ConnectionString));
+            services.AddSingleton<IUserRepository, Repos.UserRepository>();
+            services.AddSingleton<ICipherRepository, Repos.CipherRepository>();
 
             // Context
             services.AddScoped<CurrentContext>();
diff --git a/src/Api/settings.json b/src/Api/settings.json
index ca0aebe43..af8f7fdb1 100644
--- a/src/Api/settings.json
+++ b/src/Api/settings.json
@@ -1,18 +1,22 @@
 {
-    "globalSettings": {
-        "siteName": "bitwarden",
-        "baseVaultUri": "http://localhost:4001",
-        "jwtSigningKey": "THIS IS A SECRET. IT KEEPS YOUR TOKEN SAFE. :)",
-        "sqlServer": {
-            "connectionString": "SECRET"
-        },
-        "mail": {
-            "apiKey": "SECRET",
-            "replyToEmail": "do-not-reply@bitwarden.com"
-        },
-        "loggr": {
-            "logKey":  "SECRET",
-            "apiKey": "SECRET"
-        }
+  "globalSettings": {
+    "siteName": "bitwarden",
+    "baseVaultUri": "http://localhost:4001",
+    "jwtSigningKey": "THIS IS A SECRET. IT KEEPS YOUR TOKEN SAFE. :)",
+    "sqlServer": {
+      "connectionString": "SECRET"
+    },
+    "mail": {
+      "apiKey": "SECRET",
+      "replyToEmail": "do-not-reply@bitwarden.com"
+    },
+    "loggr": {
+      "logKey": "SECRET",
+      "apiKey": "SECRET"
+    },
+    "cache": {
+      "connectionString": "SECRET.COM:6380,password=SECRET,ssl=True,abortConnect=False",
+      "database": 0
     }
+  }
 }
diff --git a/src/Core/Constants.cs b/src/Core/Constants.cs
new file mode 100644
index 000000000..95125e258
--- /dev/null
+++ b/src/Core/Constants.cs
@@ -0,0 +1,7 @@
+namespace Bit.Core
+{
+    public static class Constants
+    {
+        public const string UserIdCacheKey = "User:Id_{0}";
+    }
+}
diff --git a/src/Core/GlobalSettings.cs b/src/Core/GlobalSettings.cs
index d859d0c7b..1785e0f0e 100644
--- a/src/Core/GlobalSettings.cs
+++ b/src/Core/GlobalSettings.cs
@@ -1,4 +1,5 @@
-using System;
+using StackExchange.Redis.Extensions.Core.Configuration;
+using System;
 using System.Collections.Generic;
 
 namespace Bit.Core
@@ -11,6 +12,7 @@ namespace Bit.Core
         public virtual SqlServerSettings SqlServer { get; set; } = new SqlServerSettings();
         public virtual MailSettings Mail { get; set; } = new MailSettings();
         public virtual LoggrSettings Loggr { get; set; } = new LoggrSettings();
+        public virtual CacheSettings Cache { get; set; } = new CacheSettings();
 
         public class SqlServerSettings
         {
@@ -28,5 +30,11 @@ namespace Bit.Core
             public string LogKey { get; set; }
             public string ApiKey { get; set; }
         }
+
+        public class CacheSettings
+        {
+            public string ConnectionString { get; set; }
+            public int Database { get; set; }
+        }
     }
 }
diff --git a/src/Core/Repositories/IRepository.cs b/src/Core/Repositories/IRepository.cs
index 71d0f15a5..d577f35c3 100644
--- a/src/Core/Repositories/IRepository.cs
+++ b/src/Core/Repositories/IRepository.cs
@@ -9,7 +9,6 @@ namespace Bit.Core.Repositories
         Task CreateAsync(T obj);
         Task ReplaceAsync(T obj);
         Task UpsertAsync(T obj);
-        Task DeleteByIdAsync(TId id);
         Task DeleteAsync(T obj);
     }
 }
diff --git a/src/Core/Repositories/SqlServer/CipherRepository.cs b/src/Core/Repositories/SqlServer/CipherRepository.cs
index ad91274da..ed7201d79 100644
--- a/src/Core/Repositories/SqlServer/CipherRepository.cs
+++ b/src/Core/Repositories/SqlServer/CipherRepository.cs
@@ -7,15 +7,24 @@ using DataTableProxy;
 using Bit.Core.Domains;
 using System.Data;
 using Dapper;
+using StackExchange.Redis.Extensions.Core;
 
 namespace Bit.Core.Repositories.SqlServer
 {
     public class CipherRepository : Repository<Cipher, Guid>, ICipherRepository
     {
-        public CipherRepository(string connectionString)
-            : base(connectionString)
+        private readonly ICacheClient _cacheClient;
+
+        public CipherRepository(GlobalSettings globalSettings, ICacheClient cacheClient)
+            : this(globalSettings.SqlServer.ConnectionString, cacheClient)
         { }
 
+        public CipherRepository(string connectionString, ICacheClient cacheClient)
+            : base(connectionString)
+        {
+            _cacheClient = cacheClient;
+        }
+
         public async Task<Cipher> GetByIdAsync(Guid id, Guid userId)
         {
             var cipher = await GetByIdAsync(id);
@@ -57,7 +66,7 @@ namespace Bit.Core.Repositories.SqlServer
             }
         }
 
-        public async Task<Tuple<ICollection<Cipher>, ICollection<Guid>>> 
+        public async Task<Tuple<ICollection<Cipher>, ICollection<Guid>>>
             GetManySinceRevisionDateAndUserIdWithDeleteHistoryAsync(DateTime sinceRevisionDate, Guid userId)
         {
             using(var connection = new SqlConnection(ConnectionString))
@@ -78,11 +87,11 @@ namespace Bit.Core.Repositories.SqlServer
             }
         }
 
-        public Task UpdateUserEmailPasswordAndCiphersAsync(User user, IEnumerable<Cipher> ciphers)
+        public async Task UpdateUserEmailPasswordAndCiphersAsync(User user, IEnumerable<Cipher> ciphers)
         {
             if(ciphers.Count() == 0)
             {
-                return Task.FromResult(0);
+                return;
             }
 
             using(var connection = new SqlConnection(ConnectionString))
@@ -167,7 +176,8 @@ namespace Bit.Core.Repositories.SqlServer
                 }
             }
 
-            return Task.FromResult(0);
+            // Cleanup user cache
+            await _cacheClient.RemoveAllAsync(new string[] { string.Format(Constants.UserIdCacheKey, user.Id) });
         }
 
         public Task CreateAsync(IEnumerable<Cipher> ciphers)
diff --git a/src/Core/Repositories/SqlServer/Repository.cs b/src/Core/Repositories/SqlServer/Repository.cs
index d807b395a..6352e4fad 100644
--- a/src/Core/Repositories/SqlServer/Repository.cs
+++ b/src/Core/Repositories/SqlServer/Repository.cs
@@ -75,17 +75,12 @@ namespace Bit.Core.Repositories.SqlServer
         }
 
         public virtual async Task DeleteAsync(T obj)
-        {
-            await DeleteByIdAsync(obj.Id);
-        }
-
-        public virtual async Task DeleteByIdAsync(TId id)
         {
             using(var connection = new SqlConnection(ConnectionString))
             {
                 await connection.ExecuteAsync(
                     $"[{Schema}].[{Table}_DeleteById]",
-                    new { Id = id },
+                    new { Id = obj.Id },
                     commandType: CommandType.StoredProcedure);
             }
         }
diff --git a/src/Core/Repositories/SqlServer/UserRepository.cs b/src/Core/Repositories/SqlServer/UserRepository.cs
index 5d9fda57c..771c7ac06 100644
--- a/src/Core/Repositories/SqlServer/UserRepository.cs
+++ b/src/Core/Repositories/SqlServer/UserRepository.cs
@@ -5,15 +5,39 @@ using System.Linq;
 using System.Threading.Tasks;
 using Bit.Core.Domains;
 using Dapper;
+using StackExchange.Redis.Extensions.Core;
 
 namespace Bit.Core.Repositories.SqlServer
 {
     public class UserRepository : Repository<User, Guid>, IUserRepository
     {
-        public UserRepository(string connectionString)
-            : base(connectionString)
+        private readonly ICacheClient _cacheClient;
+
+        public UserRepository(GlobalSettings globalSettings, ICacheClient cacheClient)
+            : this(globalSettings.SqlServer.ConnectionString, cacheClient)
         { }
 
+        public UserRepository(string connectionString, ICacheClient cacheClient)
+            : base(connectionString)
+        {
+            _cacheClient = cacheClient;
+        }
+
+        public override async Task<User> GetByIdAsync(Guid id)
+        {
+            var cacheKey = string.Format(Constants.UserIdCacheKey, id);
+
+            var user = await _cacheClient.GetAsync<User>(cacheKey);
+            if(user != null)
+            {
+                return user;
+            }
+
+            user = await base.GetByIdAsync(id);
+            await _cacheClient.AddAsync(cacheKey, user);
+            return user;
+        }
+
         public async Task<User> GetByEmailAsync(string email)
         {
             using(var connection = new SqlConnection(ConnectionString))
@@ -26,5 +50,22 @@ namespace Bit.Core.Repositories.SqlServer
                 return results.SingleOrDefault();
             }
         }
+
+        public override async Task ReplaceAsync(User user)
+        {
+            await base.ReplaceAsync(user);
+            await PurgeCacheAsync(user);
+        }
+
+        public override async Task DeleteAsync(User user)
+        {
+            await base.DeleteAsync(user);
+            await PurgeCacheAsync(user);
+        }
+
+        private async Task PurgeCacheAsync(User user)
+        {
+            await _cacheClient.RemoveAllAsync(new string[] { string.Format(Constants.UserIdCacheKey, user.Id) });
+        }
     }
 }
diff --git a/src/Core/project.json b/src/Core/project.json
index 14b700438..ea0323c22 100644
--- a/src/Core/project.json
+++ b/src/Core/project.json
@@ -10,7 +10,9 @@
         "Microsoft.AspNetCore.Mvc.Abstractions": "1.0.0-rc2-final",
         "Dapper": "1.42.0",
         "DataTableProxy": "1.2.0",
-        "Sendgrid": "6.3.4"
+        "Sendgrid": "6.3.4",
+        "StackExchange.Redis": "1.0.488",
+        "StackExchange.Redis.Extensions.Protobuf": "1.3.5"
     },
 
     "frameworks": {