Stop storing unreadCount for Feed and Folder objects on disk, since they’re fast to fetch at startup. Also, give Feed an ODBRawValueTable for metadata storage.

Frameworks/Account/Account.swift

@@ -60,6 +60,8 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 
 	private let settingsODB: ODB
 	private let settingsTable: ODBTable
+	private let feedsPath: ODBPath
+	private let feedsTable: ODBTable
 
 	private struct SettingsKey {
 		static let unreadCount = "unreadCount"
@@ -122,6 +124,8 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 		self.settingsODB.vacuum()
 		let settingsPath = ODBPath.path(["settings"])
 		self.settingsTable = settingsODB.ensureTable(settingsPath)!
+		self.feedsPath = ODBPath.path(["feeds"])
+		self.feedsTable = settingsODB.ensureTable(self.feedsPath)!
 
 		NotificationCenter.default.addObserver(self, selector: #selector(downloadProgressDidChange(_:)), name: .DownloadProgressDidChange, object: nil)
 		NotificationCenter.default.addObserver(self, selector: #selector(unreadCountDidChange(_:)), name: .UnreadCountDidChange, object: nil)
@@ -134,7 +138,6 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 		pullObjectsFromDisk()
 		
 		DispatchQueue.main.async {
-			self.updateUnreadCount()
 			self.fetchAllUnreadCounts()
 		}
 
@@ -439,27 +442,9 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 	@objc func unreadCountDidChange(_ note: Notification) {
 
 		// Update the unread count if it’s a direct child.
-		// If the object is owned by this account, then mark dirty —
-		// since unread counts are saved to disk along with other feed info.
 
-		if let object = note.object {
-
-			if objectIsChild(object as AnyObject) {
-				updateUnreadCount()
-				self.dirty = true
-				return
-			}
-
-			if let feed = object as? Feed {
-				if feed.account === self {
-					self.dirty = true
-				}
-			}
-			if let folder = object as? Folder {
-				if folder.account === self {
-					self.dirty = true
-				}
-			}
+		if let object = note.object, objectIsChild(object as AnyObject) {
+			updateUnreadCount()
 		}
 	}
     
@@ -529,6 +514,12 @@ extension Account {
 
 		return diskObjects.compactMap { object(with: $0) }
 	}
+
+	func settingsTableForFeed(feedID: String) -> ODBRawValueTable? {
+		let feedPath = feedsPath + feedID
+		let table = settingsODB.ensureTable(feedPath)
+		return table?.rawValueTable
+	}
 }
 
 // MARK: - Disk (Private)
@@ -713,6 +704,7 @@ private extension Account {
 					feed.unreadCount = 0
 				}
 			}
+			self.updateUnreadCount()
 		}
 	}
 }

Frameworks/Account/Feed.swift

@@ -10,6 +10,7 @@ import Foundation
 import RSCore
 import RSWeb
 import Articles
+import RSDatabase
 
 public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
 
@@ -68,6 +69,10 @@ public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
 		}
 	}
 
+	private lazy var settingsTable: ODBRawValueTable? = {
+		return account?.settingsTableForFeed(feedID: feedID)
+	}()
+
 	// MARK: - Init
 
 	public init(accountID: String, url: String, feedID: String) {
@@ -90,7 +95,6 @@ public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
 		static let authors = "authors"
 		static let conditionalGetInfo = "conditionalGetInfo"
 		static let contentHash = "contentHash"
-		static let unreadCount = "unreadCount"
 	}
 
 	convenience public init?(accountID: String, dictionary: [String: Any]) {
@@ -112,10 +116,6 @@ public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
 			self.conditionalGetInfo = HTTPConditionalGetInfo(dictionary: conditionalGetInfoDictionary)
 		}
 
-		if let savedUnreadCount = dictionary[Key.unreadCount] as? Int {
-			self.unreadCount = savedUnreadCount
-		}
-
 		if let authorsDiskArray = dictionary[Key.authors] as? [[String: Any]] {
 			self.authors = Author.authorsWithDiskArray(authorsDiskArray)
 		}
@@ -157,9 +157,6 @@ public final class Feed: DisplayNameProvider, UnreadCountProvider, Hashable {
 		if let contentHash = contentHash {
 			d[Key.contentHash] = contentHash
 		}
-		if unreadCount > 0 {
-			d[Key.unreadCount] = unreadCount
-		}
 		if let conditionalGetInfo = conditionalGetInfo {
 			d[Key.conditionalGetInfo] = conditionalGetInfo.dictionary
 		}

Frameworks/Account/Folder.swift

@@ -60,7 +60,6 @@ public final class Folder: DisplayNameProvider, Container, UnreadCountProvider,
 
 	private struct Key {
 		static let name = "name"
-		static let unreadCount = "unreadCount"
 		static let children = "children"
 	}
 
@@ -72,10 +71,6 @@ public final class Folder: DisplayNameProvider, Container, UnreadCountProvider,
 		if let childrenArray = dictionary[Key.children] as? [[String: Any]] {
 			self.children = Folder.objects(with: childrenArray, account: account)
 		}
-
-		if let savedUnreadCount = dictionary[Key.unreadCount] as? Int {
-			self.unreadCount = savedUnreadCount
-		}
 	}
 
 	var dictionary: [String: Any] {
@@ -88,10 +83,7 @@ public final class Folder: DisplayNameProvider, Container, UnreadCountProvider,
 		if let name = name {
 			d[Key.name] = name
 		}
-		if unreadCount > 0 {
-			d[Key.unreadCount] = unreadCount
-		}
-		
+
 		let childObjects = children.compactMap { (child) -> [String: Any]? in
 			
 			if let feed = child as? Feed {