diff --git a/Cargo.lock b/Cargo.lock
index 4f03beba90..3a340d7113 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1112,7 +1112,7 @@ dependencies = [
 [[package]]
 name = "jwst-codec"
 version = "0.1.0"
-source = "git+https://github.com/toeverything/OctoBase.git?rev=aad9e5b#aad9e5b7e9d6f479e6cf7555f5845bbbaaadbc66"
+source = "git+https://github.com/toeverything/OctoBase.git?rev=49a6b7a#49a6b7af25ce1fe54e8383e10980e9536821d286"
 dependencies = [
  "arbitrary",
  "bitvec",
@@ -1133,7 +1133,7 @@ dependencies = [
 [[package]]
 name = "jwst-core"
 version = "0.1.0"
-source = "git+https://github.com/toeverything/OctoBase.git?rev=aad9e5b#aad9e5b7e9d6f479e6cf7555f5845bbbaaadbc66"
+source = "git+https://github.com/toeverything/OctoBase.git?rev=49a6b7a#49a6b7af25ce1fe54e8383e10980e9536821d286"
 dependencies = [
  "async-trait",
  "base64",
@@ -1151,7 +1151,7 @@ dependencies = [
 [[package]]
 name = "jwst-logger"
 version = "0.1.0"
-source = "git+https://github.com/toeverything/OctoBase.git?rev=aad9e5b#aad9e5b7e9d6f479e6cf7555f5845bbbaaadbc66"
+source = "git+https://github.com/toeverything/OctoBase.git?rev=49a6b7a#49a6b7af25ce1fe54e8383e10980e9536821d286"
 dependencies = [
  "chrono",
  "nu-ansi-term 0.49.0",
@@ -1164,7 +1164,7 @@ dependencies = [
 [[package]]
 name = "jwst-storage"
 version = "0.1.0"
-source = "git+https://github.com/toeverything/OctoBase.git?rev=aad9e5b#aad9e5b7e9d6f479e6cf7555f5845bbbaaadbc66"
+source = "git+https://github.com/toeverything/OctoBase.git?rev=49a6b7a#49a6b7af25ce1fe54e8383e10980e9536821d286"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1189,7 +1189,7 @@ dependencies = [
 [[package]]
 name = "jwst-storage-migration"
 version = "0.1.0"
-source = "git+https://github.com/toeverything/OctoBase.git?rev=aad9e5b#aad9e5b7e9d6f479e6cf7555f5845bbbaaadbc66"
+source = "git+https://github.com/toeverything/OctoBase.git?rev=49a6b7a#49a6b7af25ce1fe54e8383e10980e9536821d286"
 dependencies = [
  "sea-orm-migration",
  "tokio",
diff --git a/packages/backend/server/migrations/20231124091123_soft_delete_opt_blobs/migration.sql b/packages/backend/server/migrations/20231124091123_soft_delete_opt_blobs/migration.sql
new file mode 100644
index 0000000000..6e107ce072
--- /dev/null
+++ b/packages/backend/server/migrations/20231124091123_soft_delete_opt_blobs/migration.sql
@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "optimized_blobs" ADD COLUMN     "deleted_at" TIMESTAMPTZ(6);
diff --git a/packages/backend/server/schema.prisma b/packages/backend/server/schema.prisma
index a35a4187d2..640ad71c4a 100644
--- a/packages/backend/server/schema.prisma
+++ b/packages/backend/server/schema.prisma
@@ -178,13 +178,15 @@ model Blob {
 }
 
 model OptimizedBlob {
-  id          Int      @id @default(autoincrement()) @db.Integer
-  hash        String   @db.VarChar
-  workspaceId String   @map("workspace_id") @db.VarChar
-  params      String   @db.VarChar
-  blob        Bytes    @db.ByteA
+  id          Int       @id @default(autoincrement()) @db.Integer
+  hash        String    @db.VarChar
+  workspaceId String    @map("workspace_id") @db.VarChar
+  params      String    @db.VarChar
+  blob        Bytes     @db.ByteA
   length      BigInt
-  createdAt   DateTime @default(now()) @map("created_at") @db.Timestamptz(6)
+  createdAt   DateTime  @default(now()) @map("created_at") @db.Timestamptz(6)
+  // not for keeping, but for snapshot history
+  deletedAt   DateTime? @map("deleted_at") @db.Timestamptz(6)
 
   @@unique([workspaceId, hash, params])
   @@map("optimized_blobs")
diff --git a/packages/backend/storage/Cargo.toml b/packages/backend/storage/Cargo.toml
index 7ccff97bdd..b1374cac9f 100644
--- a/packages/backend/storage/Cargo.toml
+++ b/packages/backend/storage/Cargo.toml
@@ -8,9 +8,9 @@ crate-type = ["cdylib"]
 
 [dependencies]
 chrono = "0.4"
-jwst-codec = { git = "https://github.com/toeverything/OctoBase.git", rev = "aad9e5b" }
-jwst-core = { git = "https://github.com/toeverything/OctoBase.git", rev = "aad9e5b" }
-jwst-storage = { git = "https://github.com/toeverything/OctoBase.git", rev = "aad9e5b" }
+jwst-codec = { git = "https://github.com/toeverything/OctoBase.git", rev = "49a6b7a" }
+jwst-core = { git = "https://github.com/toeverything/OctoBase.git", rev = "49a6b7a" }
+jwst-storage = { git = "https://github.com/toeverything/OctoBase.git", rev = "49a6b7a" }
 napi = { version = "2", default-features = false, features = [
   "napi5",
   "async",