diff --git a/SignalMessaging/environment/AppSetup.m b/SignalMessaging/environment/AppSetup.m
index c4864b10d1..ac165cba9f 100644
--- a/SignalMessaging/environment/AppSetup.m
+++ b/SignalMessaging/environment/AppSetup.m
@@ -97,6 +97,7 @@ NS_ASSUME_NONNULL_BEGIN
         SignalServiceAddressCache *signalServiceAddressCache = [SignalServiceAddressCache new];
         AccountServiceClient *accountServiceClient = [AccountServiceClient new];
         OWSStorageServiceManager *storageServiceManager = OWSStorageServiceManager.shared;
+        SSKPreferences *sskPreferences = [SSKPreferences new];
 
         OWSAudioSession *audioSession = [OWSAudioSession new];
         OWSSounds *sounds = [OWSSounds new];
@@ -147,7 +148,8 @@ NS_ASSUME_NONNULL_BEGIN
                                                         signalServiceAddressCache:signalServiceAddressCache
                                                              accountServiceClient:accountServiceClient
                                                             storageServiceManager:storageServiceManager
-                                                               storageCoordinator:storageCoordinator]];
+                                                               storageCoordinator:storageCoordinator
+                                                                   sskPreferences:sskPreferences]];
 
         appSpecificSingletonBlock();
 
diff --git a/SignalMessaging/utils/OWSPreferences.m b/SignalMessaging/utils/OWSPreferences.m
index ab5502ba1e..858e6879ba 100644
--- a/SignalMessaging/utils/OWSPreferences.m
+++ b/SignalMessaging/utils/OWSPreferences.m
@@ -50,6 +50,14 @@ NSString *const OWSPreferencesKey_IsAudibleErrorLoggingEnabled = @"IsAudibleErro
 NSString *const OWSPreferencesKeySystemCallLogEnabled = @"OWSPreferencesKeySystemCallLogEnabled";
 NSString *const OWSPreferencesKeyIsViewOnceMessagesEnabled = @"OWSPreferencesKeyIsViewOnceMessagesEnabled";
 
+@interface OWSPreferences ()
+
+@property (atomic, nullable) NSNumber *notificationPreviewTypeCache;
+
+@end
+
+#pragma mark -
+
 @implementation OWSPreferences
 
 #pragma mark - Dependencies
@@ -503,12 +511,21 @@ NSString *const OWSPreferencesKeyIsViewOnceMessagesEnabled = @"OWSPreferencesKey
 - (void)setNotificationPreviewType:(NotificationType)value
 {
     [self setUInt:(NSUInteger)value forKey:OWSPreferencesKeyNotificationPreviewType];
+
+    self.notificationPreviewTypeCache = @(value);
 }
 
 - (NotificationType)notificationPreviewType
 {
-    return (NotificationType)
-        [self uintForKey:OWSPreferencesKeyNotificationPreviewType defaultValue:(NSUInteger)NotificationNamePreview];
+    NSNumber *_Nullable cachedValue = self.notificationPreviewTypeCache;
+    if (cachedValue != nil) {
+        return (NotificationType)cachedValue.unsignedIntegerValue;
+    }
+
+    NotificationType result = (NotificationType)[self uintForKey:OWSPreferencesKeyNotificationPreviewType
+                                                    defaultValue:(NSUInteger)NotificationNamePreview];
+    self.notificationPreviewTypeCache = @(result);
+    return result;
 }
 
 - (NSString *)nameForNotificationPreviewType:(NotificationType)notificationType
diff --git a/SignalServiceKit/src/SSKEnvironment.h b/SignalServiceKit/src/SSKEnvironment.h
index 84a431d86b..2fb4233c62 100644
--- a/SignalServiceKit/src/SSKEnvironment.h
+++ b/SignalServiceKit/src/SSKEnvironment.h
@@ -26,6 +26,7 @@ NS_ASSUME_NONNULL_BEGIN
 @class SDSDatabaseStorage;
 @class SSKMessageDecryptJobQueue;
 @class SSKPreKeyStore;
+@class SSKPreferences;
 @class SSKSessionStore;
 @class SSKSignedPreKeyStore;
 @class SignalServiceAddressCache;
@@ -84,7 +85,8 @@ NS_ASSUME_NONNULL_BEGIN
               signalServiceAddressCache:(SignalServiceAddressCache *)signalServiceAddressCache
                    accountServiceClient:(AccountServiceClient *)accountServiceClient
                   storageServiceManager:(id<StorageServiceManagerProtocol>)storageServiceManager
-                     storageCoordinator:(StorageCoordinator *)storageCoordinator NS_DESIGNATED_INITIALIZER;
+                     storageCoordinator:(StorageCoordinator *)storageCoordinator
+                         sskPreferences:(SSKPreferences *)sskPreferences NS_DESIGNATED_INITIALIZER;
 
 @property (nonatomic, readonly, class) SSKEnvironment *shared;
 
@@ -132,6 +134,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, readonly) StickerManager *stickerManager;
 @property (nonatomic, readonly) SDSDatabaseStorage *databaseStorage;
 @property (nonatomic, readonly) StorageCoordinator *storageCoordinator;
+@property (nonatomic, readonly) SSKPreferences *sskPreferences;
 
 @property (nonatomic, readonly, nullable) OWSPrimaryStorage *primaryStorage;
 
diff --git a/SignalServiceKit/src/SSKEnvironment.m b/SignalServiceKit/src/SSKEnvironment.m
index 5fb451151e..1a610d534c 100644
--- a/SignalServiceKit/src/SSKEnvironment.m
+++ b/SignalServiceKit/src/SSKEnvironment.m
@@ -42,6 +42,7 @@ static SSKEnvironment *sharedSSKEnvironment;
 @property (nonatomic) StickerManager *stickerManager;
 @property (nonatomic) SDSDatabaseStorage *databaseStorage;
 @property (nonatomic) StorageCoordinator *storageCoordinator;
+@property (nonatomic) SSKPreferences *sskPreferences;
 
 @end
 
@@ -88,6 +89,7 @@ static SSKEnvironment *sharedSSKEnvironment;
                    accountServiceClient:(AccountServiceClient *)accountServiceClient
                   storageServiceManager:(id<StorageServiceManagerProtocol>)storageServiceManager
                      storageCoordinator:(StorageCoordinator *)storageCoordinator
+                         sskPreferences:(SSKPreferences *)sskPreferences
 {
     self = [super init];
     if (!self) {
@@ -128,6 +130,7 @@ static SSKEnvironment *sharedSSKEnvironment;
     OWSAssertDebug(accountServiceClient);
     OWSAssertDebug(storageServiceManager);
     OWSAssertDebug(storageCoordinator);
+    OWSAssertDebug(sskPreferences);
 
     _contactsManager = contactsManager;
     _linkPreviewManager = linkPreviewManager;
@@ -164,6 +167,7 @@ static SSKEnvironment *sharedSSKEnvironment;
     _accountServiceClient = accountServiceClient;
     _storageServiceManager = storageServiceManager;
     _storageCoordinator = storageCoordinator;
+    _sskPreferences = sskPreferences;
 
     return self;
 }
diff --git a/SignalServiceKit/src/TestUtils/MockSSKEnvironment.m b/SignalServiceKit/src/TestUtils/MockSSKEnvironment.m
index 8999167ffb..8e5430f9d7 100644
--- a/SignalServiceKit/src/TestUtils/MockSSKEnvironment.m
+++ b/SignalServiceKit/src/TestUtils/MockSSKEnvironment.m
@@ -97,6 +97,7 @@ NS_ASSUME_NONNULL_BEGIN
     SignalServiceAddressCache *signalServiceAddressCache = [SignalServiceAddressCache new];
     AccountServiceClient *accountServiceClient = [FakeAccountServiceClient new];
     OWSFakeStorageServiceManager *storageServiceManager = [OWSFakeStorageServiceManager new];
+    SSKPreferences *sskPreferences = [SSKPreferences new];
 
     self = [super initWithContactsManager:contactsManager
                        linkPreviewManager:linkPreviewManager
@@ -132,7 +133,8 @@ NS_ASSUME_NONNULL_BEGIN
                 signalServiceAddressCache:signalServiceAddressCache
                      accountServiceClient:accountServiceClient
                     storageServiceManager:storageServiceManager
-                       storageCoordinator:storageCoordinator];
+                       storageCoordinator:storageCoordinator
+                           sskPreferences:sskPreferences];
 
     if (!self) {
         return nil;
diff --git a/SignalServiceKit/src/Util/SSKPreferences.swift b/SignalServiceKit/src/Util/SSKPreferences.swift
index 746797bcb9..2449542fe6 100644
--- a/SignalServiceKit/src/Util/SSKPreferences.swift
+++ b/SignalServiceKit/src/Util/SSKPreferences.swift
@@ -6,11 +6,16 @@ import Foundation
 
 @objc
 public class SSKPreferences: NSObject {
-    // Never instantiate this class.
-    private override init() {}
+    private static var shared: SSKPreferences {
+        return SSKEnvironment.shared.sskPreferences
+    }
 
     public static let store = SDSKeyValueStore(collection: "SSKPreferences")
 
+    private var store: SDSKeyValueStore {
+        return SSKPreferences.store
+    }
+
     // MARK: -
 
     private static let areLinkPreviewsEnabledKey = "areLinkPreviewsEnabled"
@@ -33,16 +38,34 @@ public class SSKPreferences: NSObject {
 
     // MARK: -
 
-    private static let hasSavedThreadKey = "hasSavedThread"
-
     @objc
     public static func hasSavedThread(transaction: SDSAnyReadTransaction) -> Bool {
-        return store.getBool(hasSavedThreadKey, defaultValue: false, transaction: transaction)
+        return shared.hasSavedThread(transaction: transaction)
     }
 
     @objc
     public static func setHasSavedThread(_ newValue: Bool, transaction: SDSAnyWriteTransaction) {
+        shared.setHasSavedThread(newValue, transaction: transaction)
+    }
+
+    private let hasSavedThreadKey = "hasSavedThread"
+    // Only access this queue within db transactions.
+    private var hasSavedThreadCache: Bool?
+
+    @objc
+    public func hasSavedThread(transaction: SDSAnyReadTransaction) -> Bool {
+        if let value = hasSavedThreadCache {
+            return value
+        }
+        let value = store.getBool(hasSavedThreadKey, defaultValue: false, transaction: transaction)
+        hasSavedThreadCache = value
+        return value
+    }
+
+    @objc
+    public func setHasSavedThread(_ newValue: Bool, transaction: SDSAnyWriteTransaction) {
         store.setBool(newValue, key: hasSavedThreadKey, transaction: transaction)
+        hasSavedThreadCache = newValue
     }
 
     // MARK: -