diff --git a/koucha/src/db.rs b/koucha/src/db.rs
index 6914cfa..cea05ac 100644
--- a/koucha/src/db.rs
+++ b/koucha/src/db.rs
@@ -11,15 +11,23 @@ pub use channel::Channel;
 mod item;
 pub use item::Item;
 
-macro_rules! define_id {
-    ($name:ident) => {
-      #[derive(PartialEq, Debug, Copy, Clone)]
-      pub struct $name(i64);
-      impl From<$name> for i64 { fn from(id: $name) -> Self { id.0 } }
-    };
+macro_rules! define_key {
+  ($name:ident) => {
+    #[derive(PartialEq, Debug, Copy, Clone)]
+    pub struct $name(i64);
+  };
+
+  ($name:ident, $($field:ident),* $(,)?) => {
+    #[derive(PartialEq, Debug, Copy, Clone)]
+    pub struct $name {
+      $($field: i64),*
+    }
+  };
 }
 
-define_id!(UserId);
-define_id!(FeedId);
-define_id!(ChannelId);
-define_id!(ItemId);
+define_key!(UserKey);
+define_key!(FeedKey);
+define_key!(FeedChannelKey, feed_id, channel_id);
+define_key!(FeedItemKey, feed_id, item_id);
+define_key!(ChannelKey);
+define_key!(ItemKey);
diff --git a/koucha/src/db/channel.rs b/koucha/src/db/channel.rs
index 6df59fb..b79454f 100644
--- a/koucha/src/db/channel.rs
+++ b/koucha/src/db/channel.rs
@@ -4,7 +4,7 @@ use crate::{
   Result,
   AdapterPool,
   db::{
-    ChannelId,
+    ChannelKey,
     Item,
     FeedChannel,
     feed_channel::UnparsedFeedChannel,
@@ -23,7 +23,7 @@ pub struct UnparsedChannel {
 impl UnparsedChannel {
   pub fn parse(self) -> Result<Channel> {
     Ok(Channel {
-      id: ChannelId(self.id),
+      id: ChannelKey(self.id),
       title: self.title,
       link: Url::parse(&self.link)?,
       description: self.description,
@@ -36,7 +36,7 @@ impl UnparsedChannel {
 }
 
 pub struct Channel {
-  id: ChannelId,
+  id: ChannelKey,
   title: String,
   link: Url,
   description: Option<String>,
@@ -44,7 +44,7 @@ pub struct Channel {
 }
 
 impl Channel {
-  pub fn id(&self) -> ChannelId { self.id }
+  pub fn id(&self) -> ChannelKey { self.id }
   pub fn title(&self) -> &str { &self.title }
   pub fn link(&self) -> &Url { &self.link }
   pub fn description(&self) -> Option<&str> { self.description.as_deref() }
@@ -59,7 +59,7 @@ impl Channel {
     channels
   }
 
-  pub async fn get(pool: &AdapterPool, id: ChannelId) -> Result<Self> {
+  pub async fn get(pool: &AdapterPool, id: ChannelKey) -> Result<Self> {
     let channel: Result<Self> = sqlx::query_as!(
       UnparsedChannel,
       "SELECT id, title, link, description, last_fetched
@@ -245,10 +245,7 @@ mod tests {
     let channel1 = Channel::get_or_create(pool, url_feed.clone()).await.unwrap();
     let channel2 = Channel::get_or_create(pool, url_feed).await.unwrap();
 
-    assert_eq!(
-      i64::from(channel1.id()),
-      i64::from(channel2.id())
-    );
+    assert_eq!(channel1.id(), channel2.id());
   }
 
   #[tokio::test]
diff --git a/koucha/src/db/feed.rs b/koucha/src/db/feed.rs
index a769b1b..c3c95d1 100644
--- a/koucha/src/db/feed.rs
+++ b/koucha/src/db/feed.rs
@@ -3,10 +3,10 @@ use crate::{
   Result,
   db::{
     Channel,
-    ChannelId,
-    FeedId,
+    ChannelKey,
+    FeedKey,
     Item,
-    UserId,
+    UserKey,
     channel::UnparsedChannel,
     item::UnparsedItem,
   },
@@ -19,23 +19,23 @@ pub struct UnparsedFeed {
 impl UnparsedFeed {
   pub fn parse(self) -> Result<Feed> {
     Ok(Feed {
-      id: FeedId(self.id),
+      id: FeedKey(self.id),
       title: self.title,
     })
   }
 }
 
 pub struct Feed {
-  id: FeedId,
+  id: FeedKey,
   title: String,
 }
 
 impl Feed {
-  pub fn id(&self) -> FeedId { self.id }
+  pub fn id(&self) -> FeedKey { self.id }
   pub fn title(&self) -> &str { &self.title }
 
   pub async fn get(
-    pool: &AdapterPool, id: FeedId
+    pool: &AdapterPool, id: FeedKey
   ) -> Result<Self> {
     let feed = sqlx::query_as!(
       UnparsedFeed,
@@ -47,22 +47,21 @@ impl Feed {
   }
 
   pub async fn create(
-    pool: &AdapterPool, user_id: UserId, title: &str
+    pool: &AdapterPool, user_id: UserKey, title: &str
   ) -> Result<Self> {
-    let int_id = i64::from(user_id);
     let new_feed = sqlx::query_as!(
       UnparsedFeed,
       "INSERT INTO feeds (user_id, title) 
        VALUES (?, ?)
        RETURNING id as `id!`, title",
-      int_id, title
+      user_id.0, title
     ).fetch_one(&pool.0).await?.parse();
 
     new_feed
   }
 
   pub async fn update_title(
-    pool: &AdapterPool, id: FeedId, new_title: &str
+    pool: &AdapterPool, id: FeedKey, new_title: &str
   ) -> Result<()> {
     sqlx::query!(
       "UPDATE feeds SET title = ? WHERE id = ?",
@@ -73,13 +72,12 @@ impl Feed {
   }
 
   pub async fn add_channel(
-    &self, pool: &AdapterPool, channel_id: ChannelId
+    &self, pool: &AdapterPool, channel_id: ChannelKey
   ) -> Result<()> {
-    let int_channel_id = i64::from(channel_id);
     sqlx::query!(
       "INSERT INTO feed_channels (feed_id, channel_id)
        VALUES (?, ?)",
-      self.id.0, int_channel_id
+      self.id.0, channel_id.0
     ).execute(&pool.0).await?;
 
     Ok(())
diff --git a/koucha/src/db/feed_channel.rs b/koucha/src/db/feed_channel.rs
index f8a3870..d736c2d 100644
--- a/koucha/src/db/feed_channel.rs
+++ b/koucha/src/db/feed_channel.rs
@@ -3,9 +3,9 @@ use crate::{
   AdapterPool,
   db::{
     Channel,
-    ChannelId,
+    ChannelKey,
     Feed,
-    FeedId,
+    FeedKey,
     Item,
   },
   score::{
@@ -26,8 +26,8 @@ pub struct UnparsedFeedChannel {
 impl UnparsedFeedChannel {
   pub fn parse(self) -> Result<FeedChannel> {
     Ok(FeedChannel {
-      channel_id: ChannelId(self.channel_id),
-      feed_id: FeedId(self.feed_id),
+      channel_id: ChannelKey(self.channel_id),
+      feed_id: FeedKey(self.feed_id),
       initial_score: Score::new(self.initial_score),
       gravity: Gravity::new(self.gravity),
       boost: Boost::new(self.boost),
@@ -36,8 +36,8 @@ impl UnparsedFeedChannel {
 }
 
 pub struct FeedChannel {
-  channel_id: ChannelId,
-  feed_id: FeedId,
+  channel_id: ChannelKey,
+  feed_id: FeedKey,
   initial_score: Score,
   gravity: Gravity,
   boost: Boost,
@@ -60,15 +60,14 @@ impl FeedChannel {
   async fn add_item_at(
     &self, pool: &AdapterPool, item: &Item, add_at: DateTime<Utc>
   ) -> Result<()> {
-    let int_item_id = i64::from(item.id());
-    let int_feed_id = i64::from(self.feed_id);
+    let int_item_id = item.id().0;
     let int_initial_score = i64::from(self.initial_score);
     let string_last_updated = add_at.to_rfc2822();
 
     sqlx::query!(
       "INSERT OR IGNORE INTO feed_items (feed_id, item_id, score, last_updated)
        VALUES (?, ?, ?, ?)",
-      int_feed_id, int_item_id, int_initial_score, string_last_updated
+      self.feed_id.0, int_item_id, int_initial_score, string_last_updated
     ).execute(&pool.0).await?;
     Ok(())
   }
@@ -81,7 +80,7 @@ mod tests {
   use crate::{
     db::{
       Channel,
-      FeedId,
+      FeedKey,
       User
     },
     test_utils::{
@@ -124,7 +123,7 @@ mod tests {
 
     let fc = FeedChannel {
       channel_id: channel.id(),
-      feed_id: FeedId(1), // Fake Feed
+      feed_id: FeedKey(1), // Fake Feed
       initial_score: Score::new(None),
       gravity: Gravity::new(None),
       boost: Boost::new(None),
@@ -143,7 +142,7 @@ mod tests {
     let feed = Feed::create(pool, user.id(), "My Feed").await.unwrap();
 
     let fc = FeedChannel {
-      channel_id: ChannelId(1), // Fake Channel
+      channel_id: ChannelKey(1), // Fake Channel
       feed_id: feed.id(),
       initial_score: Score::new(None),
       gravity: Gravity::new(None),
diff --git a/koucha/src/db/feed_item.rs b/koucha/src/db/feed_item.rs
index 052e8a3..ba1c29a 100644
--- a/koucha/src/db/feed_item.rs
+++ b/koucha/src/db/feed_item.rs
@@ -3,12 +3,11 @@ use crate::{
   Result,
   AdapterPool,
   db::{
-    ItemId,
-    FeedId,
+    FeedItemKey,
   },
   score::{
     TimedScore,
-    UnparsedTimedScore,
+    UnparsedTimedScore
   },
 };
 
@@ -22,8 +21,10 @@ pub struct UnparsedFeedItem {
 impl UnparsedFeedItem {
   pub fn parse(self) -> Result<FeedItem> {
     Ok(FeedItem {
-      item_id: ItemId(self.item_id),
-      feed_id: FeedId(self.feed_id),
+      key: FeedItemKey {
+        feed_id: self.feed_id,
+        item_id: self.item_id,
+      },
       score: (UnparsedTimedScore {
         value: self.score,
         last_updated: DateTime::parse_from_rfc2822(&self.last_updated)?
@@ -38,19 +39,41 @@ impl UnparsedFeedItem {
 }
 
 pub struct FeedItem {
-  item_id: ItemId,
-  feed_id: FeedId,
+  key: FeedItemKey,
   score: TimedScore,
 }
 
 impl FeedItem {
-  // async fn boost(pool: &AdapterPool, boost: Boost) -> Result<()> {
-  //   self.boost_at(pool, boost, Utc::now()).await
-  // }
-  //
-  // async fn boost_at(
-  //   &self, pool: &AdapterPool, boost: Boost, boost_at: DateTime<Utc>
-  // ) -> Result<()> {
-  //
-  // }
+  pub fn key(&self) -> FeedItemKey { self.key }
+  pub fn score(&self) -> TimedScore { self.score.clone() }
+
+  pub async fn archive(
+    &self, pool: &AdapterPool
+  ) -> Result<()> {
+    sqlx::query!(
+      "UPDATE feed_items
+       SET archived = ?
+       WHERE feed_id = ? AND item_id = ?",
+      true, self.key.feed_id, self.key.item_id
+    ).execute(&pool.0).await?;
+
+    Ok(())
+  }
+
+  pub async fn update_score(
+    pool: &AdapterPool, key: FeedItemKey, new_score: TimedScore
+  ) -> Result<()> {
+    let unparsed_score = UnparsedTimedScore::unparse(new_score);
+    let last_updated = unparsed_score.last_updated.to_rfc2822();
+    let boosted_at = unparsed_score.last_boosted.map(|lb| lb.to_rfc2822());
+
+    sqlx::query!(
+      "UPDATE feed_items
+       SET score = ?, last_updated = ?, boosted_at = ?
+       WHERE feed_id = ? AND item_id = ?",
+      unparsed_score.value, last_updated, boosted_at, key.feed_id, key.item_id
+    ).execute(&pool.0).await?;
+
+    Ok(())
+  }
 }
diff --git a/koucha/src/db/item.rs b/koucha/src/db/item.rs
index cb25331..e3486d4 100644
--- a/koucha/src/db/item.rs
+++ b/koucha/src/db/item.rs
@@ -2,8 +2,8 @@ use crate::{
   Result,
   AdapterPool,
   db::{
-    ChannelId,
-    ItemId,
+    ChannelKey,
+    ItemKey,
   },
   fetch::FetchedRSSItem,
 };
@@ -22,8 +22,8 @@ pub struct UnparsedItem {
 impl UnparsedItem {
   pub fn parse(self) -> Result<Item> {
     Ok(Item {
-      id: ItemId(self.id),
-      channel_id: ChannelId(self.channel_id),
+      id: ItemKey(self.id),
+      channel_id: ChannelKey(self.channel_id),
       fetched_at: match self.fetched_at {
         Some(dt_str) => Some(DateTime::parse_from_rfc2822(&dt_str)?
           .with_timezone(&Utc)),
@@ -38,8 +38,8 @@ impl UnparsedItem {
 }
 
 pub struct Item {
-  id: ItemId,
-  channel_id: ChannelId,
+  id: ItemKey,
+  channel_id: ChannelKey,
 
   #[allow(dead_code)] // TODO: Use for score decay calculations later
   fetched_at: Option<DateTime<Utc>>,
@@ -49,16 +49,15 @@ pub struct Item {
 }
 
 impl Item {
-  pub fn id(&self) -> ItemId { self.id }
-  pub fn channel(&self) -> ChannelId { self.channel_id }
+  pub fn id(&self) -> ItemKey { self.id }
+  pub fn channel(&self) -> ChannelKey { self.channel_id }
   pub fn title(&self) -> Option<&str> { self.title.as_deref() }
   pub fn description(&self) -> Option<&str> { self.description.as_deref() }
   pub fn content(&self) -> Option<&str> { self.content.as_deref() }
 
   pub async fn get_or_create(
-    pool: &AdapterPool, from_channel: ChannelId, guid: &str
+    pool: &AdapterPool, from_channel: ChannelKey, guid: &str
   ) -> Result<Self> {
-    let int_channel_id = i64::from(from_channel);
 
     let item = sqlx::query_as!(
       UnparsedItem,
@@ -67,7 +66,7 @@ impl Item {
        ON CONFLICT(channel_id, guid) DO UPDATE SET channel_id = channel_id
        RETURNING id as `id!`, channel_id, fetched_at, title, description,
          content",
-      int_channel_id, guid
+      from_channel.0, guid
     ).fetch_one(&pool.0).await?.parse();
 
     item
diff --git a/koucha/src/db/user.rs b/koucha/src/db/user.rs
index 63f24d8..ef7ba51 100644
--- a/koucha/src/db/user.rs
+++ b/koucha/src/db/user.rs
@@ -2,7 +2,7 @@ use crate::{
   Result,
   AdapterPool,
   db::{
-    UserId,
+    UserKey,
     Feed,
     feed::UnparsedFeed,
   },
@@ -15,22 +15,22 @@ pub struct UnparsedUser {
 impl UnparsedUser {
   pub fn parse(self) -> Result<User> {
     Ok(User {
-      id: UserId(self.id),
+      id: UserKey(self.id),
       name: self.name
     })
   }
 }
 
 pub struct User {
-  id: UserId,
+  id: UserKey,
   name: String,
 }
 
 impl User {
-  pub fn id(&self) -> UserId { self.id }
+  pub fn id(&self) -> UserKey { self.id }
   pub fn name(&self) -> &str { &self.name }
 
-  pub async fn get(pool: &AdapterPool, id: UserId) -> Result<Self> {
+  pub async fn get(pool: &AdapterPool, id: UserKey) -> Result<Self> {
     let user = sqlx::query_as!(
       UnparsedUser,
       "SELECT id, name FROM users WHERE id = ?",
@@ -58,13 +58,13 @@ impl User {
     ).fetch_one(&pool.0).await?;
 
     Ok(Self {
-      id: UserId(result.id),
+      id: UserKey(result.id),
       name: result.name,
     })
   }
 
   pub async fn update_name(
-      pool: &AdapterPool, id: UserId, new_name: &str
+      pool: &AdapterPool, id: UserKey, new_name: &str
   ) -> Result<()> {
     sqlx::query!(
       "UPDATE users SET name = ? WHERE id = ?",
diff --git a/koucha/src/score.rs b/koucha/src/score.rs
index 6d6cba2..754ca17 100644
--- a/koucha/src/score.rs
+++ b/koucha/src/score.rs
@@ -80,8 +80,24 @@ impl UnparsedTimedScore {
       }),
     }
   }
+
+  pub fn unparse(ts: TimedScore) -> Self {
+    match ts {
+      TimedScore::Decaying(ds) => UnparsedTimedScore {
+        value: ds.value.into(),
+        last_updated: ds.last_updated,
+        last_boosted: None,
+      },
+      TimedScore::Boosted(bs) => UnparsedTimedScore {
+        value: bs.value.into(),
+        last_updated: bs.boosted_at,
+        last_boosted: Some(bs.boosted_at),
+      },
+    }
+  }
 }
 
+#[derive(Clone)]
 pub enum TimedScore {
   Decaying(DecayingScore),
   Boosted(BoostedScore),
@@ -148,11 +164,13 @@ impl TimedScore {
   }
 }
 
+#[derive(Clone)]
 pub struct BoostedScore {
   value: Score,
   boosted_at: DateTime<Utc>,
 }
 
+#[derive(Clone)]
 pub struct DecayingScore {
   value: Score,
   last_updated: DateTime<Utc>,