diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt
index 29019919..96416559 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/DataHandler.kt
@@ -4,33 +4,35 @@ import com.willfp.eco.core.data.keys.KeyRegistry
 import com.willfp.eco.core.data.keys.PersistentDataKey
 import java.util.UUID
 
-interface DataHandler {
+abstract class DataHandler(
+    val type: HandlerType
+) {
     /**
      * Read value from a key.
      */
-    fun <T : Any> read(uuid: UUID, key: PersistentDataKey<T>): T?
+    abstract fun <T : Any> read(uuid: UUID, key: PersistentDataKey<T>): T?
 
     /**
      * Write value to a key.
      */
-    fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: T)
+    abstract fun <T : Any> write(uuid: UUID, key: PersistentDataKey<T>, value: T)
 
     /**
      * Save a set of keys for a given UUID.
      */
-    fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>)
+    abstract fun saveKeysFor(uuid: UUID, keys: Set<PersistentDataKey<*>>)
 
     // Everything below this are methods that are only needed for certain implementations.
 
-    fun save() {
+    open fun save() {
 
     }
 
-    fun categorize(key: PersistentDataKey<*>, category: KeyRegistry.KeyCategory) {
+    open fun categorize(key: PersistentDataKey<*>, category: KeyRegistry.KeyCategory) {
 
     }
 
-    fun initialize() {
+    open fun initialize() {
 
     }
 }
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt
index 0fdba910..2d4a2790 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MongoDataHandler.kt
@@ -21,7 +21,7 @@ import java.util.UUID
 class MongoDataHandler(
     plugin: EcoSpigotPlugin,
     private val handler: EcoProfileHandler
-) : DataHandler {
+) : DataHandler(HandlerType.MONGO) {
     private val client: CoroutineClient
     private val collection: CoroutineCollection<UUIDProfile>
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt
index 2551ee4f..3166e9c1 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/MySQLDataHandler.kt
@@ -57,7 +57,7 @@ the worst bodge I've shipped in production.
 class MySQLDataHandler(
     private val plugin: EcoSpigotPlugin,
     handler: EcoProfileHandler
-) : DataHandler {
+) : DataHandler(HandlerType.MYSQL) {
     private val playerHandler: ImplementedMySQLHandler
     private val serverHandler: ImplementedMySQLHandler
 
diff --git a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/YamlDataHandler.kt b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/YamlDataHandler.kt
index 29b030a4..37d528a6 100644
--- a/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/YamlDataHandler.kt
+++ b/eco-core/core-plugin/src/main/kotlin/com/willfp/eco/internal/spigot/data/storage/YamlDataHandler.kt
@@ -11,7 +11,7 @@ import java.util.UUID
 class YamlDataHandler(
     plugin: EcoSpigotPlugin,
     private val handler: EcoProfileHandler
-) : DataHandler {
+) : DataHandler(HandlerType.YAML) {
     private val dataYml = plugin.dataYml
 
     override fun save() {