diff --git a/Cargo.toml b/Cargo.toml
index ccbb83fe..643d3e03 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -24,6 +24,11 @@ utils = { path = "crates/utils" }
 tokio = { version = "1.23", features = ["full"] }
 tracing = "0.1"
 
+[features]
+default = ["sqlite"]
+sqlite = ["store/sqlite"]
+foundationdb = ["store/foundation"]
+
 [workspace]
 members = [
     "crates/jmap",
diff --git a/crates/store/Cargo.toml b/crates/store/Cargo.toml
index f6d1e53d..71441d08 100644
--- a/crates/store/Cargo.toml
+++ b/crates/store/Cargo.toml
@@ -33,13 +33,11 @@ num_cpus = { version = "1.15.0", optional = true }
 blake3 = "1.3.3"
 tracing = "0.1"
 
-
 [features]
-default = ["foundation"]
-rocks = ["rocksdb", "rayon", "is_sync"]
-sqlite = ["rusqlite", "rayon", "r2d2", "num_cpus", "is_sync"]
-foundation = ["foundationdb", "futures", "is_async", "key_subspace"]
+rocks = ["rocksdb", "rayon", "is_sync", "backend"]
+sqlite = ["rusqlite", "rayon", "r2d2", "num_cpus", "is_sync", "backend"]
+foundation = ["foundationdb", "futures", "key_subspace", "backend"]
 is_sync = ["maybe-async/is_sync", "lru-cache"]
-is_async = []
+backend = []
 key_subspace = []
 test_mode = []
diff --git a/crates/store/src/lib.rs b/crates/store/src/lib.rs
index 1557302f..566e6b32 100644
--- a/crates/store/src/lib.rs
+++ b/crates/store/src/lib.rs
@@ -78,6 +78,17 @@ pub struct ReadTransaction<'x> {
     _p: std::marker::PhantomData<&'x ()>,
 }
 
+#[cfg(not(feature = "backend"))]
+#[allow(dead_code)]
+pub struct Store {
+    blob: BlobStore,
+}
+
+#[cfg(not(feature = "backend"))]
+pub struct ReadTransaction<'x> {
+    _db: &'x [u8],
+}
+
 pub trait Deserialize: Sized + Sync + Send {
     fn deserialize(bytes: &[u8]) -> crate::Result<Self>;
 }
@@ -218,3 +229,125 @@ pub const SUBSPACE_BITMAPS: u8 = b'b';
 pub const SUBSPACE_VALUES: u8 = b'v';
 pub const SUBSPACE_LOGS: u8 = b'l';
 pub const SUBSPACE_INDEXES: u8 = b'i';
+
+#[cfg(not(feature = "backend"))]
+impl Store {
+    pub async fn open(_config: &utils::config::Config) -> crate::Result<Self> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn purge_bitmaps(&self) -> crate::Result<()> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn purge_account(&self, _account_id: u32) -> crate::Result<()> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn read_transaction(&self) -> crate::Result<ReadTransaction<'_>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn write(&self, _batch: write::Batch) -> crate::Result<()> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn assign_document_id(
+        &self,
+        _account_id: u32,
+        _collection: impl Into<u8>,
+    ) -> crate::Result<u32> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn assign_change_id(&self, _account_id: u32) -> crate::Result<u64> {
+        unimplemented!("No backend selected")
+    }
+
+    #[cfg(feature = "test_mode")]
+    pub async fn destroy(&self) {
+        unimplemented!("No backend selected")
+    }
+
+    #[cfg(feature = "test_mode")]
+    pub async fn assert_is_empty(&self) {
+        unimplemented!("No backend selected")
+    }
+}
+
+#[cfg(not(feature = "backend"))]
+impl ReadTransaction<'_> {
+    pub async fn get_value<U>(&self, _key: impl Key) -> crate::Result<Option<U>>
+    where
+        U: Deserialize,
+    {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn get_bitmap<T: AsRef<[u8]>>(
+        &self,
+        _key: BitmapKey<T>,
+    ) -> crate::Result<Option<roaring::RoaringBitmap>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn get_bitmaps_intersection<T: AsRef<[u8]>>(
+        &self,
+        _keys: Vec<BitmapKey<T>>,
+    ) -> crate::Result<Option<roaring::RoaringBitmap>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn get_bitmaps_union<T: AsRef<[u8]>>(
+        &self,
+        _keys: Vec<BitmapKey<T>>,
+    ) -> crate::Result<Option<roaring::RoaringBitmap>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn range_to_bitmap(
+        &self,
+        _account_id: u32,
+        _collection: u8,
+        _field: u8,
+        _value: Vec<u8>,
+        _op: query::Operator,
+    ) -> crate::Result<Option<roaring::RoaringBitmap>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn sort_index(
+        &self,
+        _account_id: u32,
+        _collection: u8,
+        _field: u8,
+        _ascending: bool,
+        _cb: impl FnMut(&[u8], u32) -> bool,
+    ) -> crate::Result<()> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn iterate<T>(
+        &self,
+        _acc: T,
+        _begin: impl Key,
+        _end: impl Key,
+        _first: bool,
+        _ascending: bool,
+        _cb: impl Fn(&mut T, &[u8], &[u8]) -> crate::Result<bool> + Sync + Send + 'static,
+    ) -> crate::Result<T> {
+        unimplemented!("No backend selected")
+    }
+
+    pub(crate) async fn get_last_change_id(
+        &self,
+        _account_id: u32,
+        _collection: u8,
+    ) -> crate::Result<Option<u64>> {
+        unimplemented!("No backend selected")
+    }
+
+    pub async fn refresh_if_old(&mut self) -> crate::Result<()> {
+        unimplemented!("No backend selected")
+    }
+}
diff --git a/crates/store/src/query/filter.rs b/crates/store/src/query/filter.rs
index d5056639..5b74a9ae 100644
--- a/crates/store/src/query/filter.rs
+++ b/crates/store/src/query/filter.rs
@@ -162,7 +162,7 @@ impl Store {
         filters: Vec<Filter>,
     ) -> crate::Result<ResultSet> {
         let collection = collection.into();
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction()
                 .await?
diff --git a/crates/store/src/query/get.rs b/crates/store/src/query/get.rs
index c397e789..e6333245 100644
--- a/crates/store/src/query/get.rs
+++ b/crates/store/src/query/get.rs
@@ -30,7 +30,7 @@ impl Store {
     where
         U: Deserialize + 'static,
     {
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction().await?.get_value(key).await
         }
@@ -46,7 +46,7 @@ impl Store {
     where
         U: Deserialize + 'static,
     {
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             let mut trx = self.read_transaction().await?;
             let mut results = Vec::with_capacity(key.len());
@@ -81,7 +81,7 @@ impl Store {
     ) -> crate::Result<Option<u64>> {
         let collection = collection.into();
 
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction()
                 .await?
@@ -101,7 +101,7 @@ impl Store {
         &self,
         key: BitmapKey<T>,
     ) -> crate::Result<Option<RoaringBitmap>> {
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction().await?.get_bitmap(key).await
         }
@@ -122,7 +122,7 @@ impl Store {
         ascending: bool,
         cb: impl Fn(&mut T, &[u8], &[u8]) -> crate::Result<bool> + Sync + Send + 'static,
     ) -> crate::Result<T> {
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction()
                 .await?
diff --git a/crates/store/src/query/sort.rs b/crates/store/src/query/sort.rs
index 572523bf..12fa32e8 100644
--- a/crates/store/src/query/sort.rs
+++ b/crates/store/src/query/sort.rs
@@ -233,7 +233,7 @@ impl Store {
             (a, b) => std::cmp::min(a as usize, b),
         };
 
-        #[cfg(feature = "is_async")]
+        #[cfg(not(feature = "is_sync"))]
         {
             self.read_transaction()
                 .await?
diff --git a/tests/Cargo.toml b/tests/Cargo.toml
index e6aee54d..ca980858 100644
--- a/tests/Cargo.toml
+++ b/tests/Cargo.toml
@@ -4,6 +4,11 @@ version = "0.1.0"
 edition = "2021"
 resolver = "2"
 
+[features]
+default = ["sqlite"]
+sqlite = ["store/sqlite"]
+foundationdb = ["store/foundation"]
+
 [dev-dependencies]
 store = { path = "../crates/store", features = ["test_mode"] }
 jmap = { path = "../crates/jmap", features = ["test_mode"] }
diff --git a/tests/src/store/assign_id.rs b/tests/src/store/assign_id.rs
index eed81298..c1b13b3c 100644
--- a/tests/src/store/assign_id.rs
+++ b/tests/src/store/assign_id.rs
@@ -30,16 +30,16 @@ use store::{write::BatchBuilder, Store};
 pub async fn test(db: Arc<Store>) {
     println!("Running Store ID assignment tests...");
 
-    store::backend::foundationdb::write::ID_ASSIGNMENT_EXPIRY
-        .store(2, std::sync::atomic::Ordering::Relaxed);
+    /*store::backend::foundationdb::write::ID_ASSIGNMENT_EXPIRY
+    .store(2, std::sync::atomic::Ordering::Relaxed);*/
 
     test_1(db.clone()).await;
     test_2(db.clone()).await;
     test_3(db.clone()).await;
     test_4(db).await;
 
-    store::backend::foundationdb::write::ID_ASSIGNMENT_EXPIRY
-        .store(60 * 60, std::sync::atomic::Ordering::Relaxed);
+    /*store::backend::foundationdb::write::ID_ASSIGNMENT_EXPIRY
+    .store(60 * 60, std::sync::atomic::Ordering::Relaxed);*/
 }
 
 async fn test_1(db: Arc<Store>) {