diff --git a/src/main/scala/net/yoshinorin/qualtet/Modules.scala b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
index 90194a7c..fe87aba4 100644
--- a/src/main/scala/net/yoshinorin/qualtet/Modules.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/Modules.scala
@@ -44,7 +44,7 @@ import net.yoshinorin.qualtet.http.routes.v1.{
   TagRoute => TagRouteV1
 }
 import net.yoshinorin.qualtet.infrastructure.db.Migrator
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 
 import pdi.jwt.JwtAlgorithm
 import java.security.SecureRandom
@@ -55,7 +55,7 @@ object Modules {
   val config = ApplicationConfig.load
 
   given log4catsLogger: Log4CatsLoggerFactory[IO] = Log4CatsSlf4jFactory.create[IO]
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
   val migrator: Migrator = new Migrator(config.db)
 
   // NOTE: for generate JWT. They are reset when re-boot application.
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/archives/ArchiveService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/archives/ArchiveService.scala
index bb24a222..2a0f3e90 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/archives/ArchiveService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/archives/ArchiveService.scala
@@ -5,7 +5,7 @@ import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.domains.contentTypes.ContentTypeService
 import net.yoshinorin.qualtet.message.Fail.NotFound
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.domains.contentTypes.ContentTypeId
 import net.yoshinorin.qualtet.syntax.*
 import cats.Monad
@@ -13,7 +13,7 @@ import cats.Monad
 class ArchiveService[F[_]: Monad](
   archiveRepository: ArchiveRepository[F],
   contentTypeService: ContentTypeService[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def actions(contentTypeId: ContentTypeId): Action[Seq[ResponseArchive]] = {
     Continue(archiveRepository.get(contentTypeId), Action.done[Seq[ResponseArchive]])
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/articles/ArticleService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/articles/ArticleService.scala
index 8144f47a..0e0a2fc0 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/articles/ArticleService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/articles/ArticleService.scala
@@ -9,13 +9,13 @@ import net.yoshinorin.qualtet.message.Fail.NotFound
 import net.yoshinorin.qualtet.domains.tags.TagName
 import net.yoshinorin.qualtet.domains.series.SeriesName
 import net.yoshinorin.qualtet.http.ArticlesQueryParameter
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.syntax.*
 
 class ArticleService[F[_]: Monad](
   articleRepository: ArticleRepository[F],
   contentTypeService: ContentTypeService[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def actions(
     contentTypeId: ContentTypeId,
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/authors/AuthorService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/authors/AuthorService.scala
index 71b92fb4..8e49fac7 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/authors/AuthorService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/authors/AuthorService.scala
@@ -3,14 +3,14 @@ package net.yoshinorin.qualtet.domains.authors
 import cats.effect.IO
 import cats.Monad
 import net.yoshinorin.qualtet.message.Fail.InternalServerError
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.syntax.*
 
 class AuthorService[F[_]: Monad](
   authorRepository: AuthorRepository[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def upsertActions(data: Author): Action[Int] = {
     Continue(authorRepository.upsert(data), Action.done[Int])
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingService.scala
index 2df17654..fc351076 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingService.scala
@@ -6,11 +6,11 @@ import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.domains.contents.ContentId
 import net.yoshinorin.qualtet.domains.tags.TagId
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 
 class ContentTaggingService[F[_]: Monad](
   contentTaggingRepository: ContentTaggingRepository[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def findByTagIdActions(id: TagId): Action[Seq[ContentTagging]] = {
     Continue(contentTaggingRepository.findByTagId(id), Action.done[Seq[ContentTagging]])
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/contentTypes/ContentTypeService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/contentTypes/ContentTypeService.scala
index 54dd1cc5..58881f7c 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/contentTypes/ContentTypeService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/contentTypes/ContentTypeService.scala
@@ -7,13 +7,13 @@ import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.message.Fail.InternalServerError
 import net.yoshinorin.qualtet.domains.Cacheable
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.syntax.*
 
 class ContentTypeService[F[_]: Monad](
   contentRepository: ContentTypeRepository[F],
   cache: CacheModule[String, ContentType]
-)(using transactor: Transactor[F, IO])
+)(using transactor: Executer[F, IO])
     extends Cacheable {
 
   def upsertActions(data: ContentType): Action[Int] = {
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/contents/ContentService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/contents/ContentService.scala
index b72b089c..1e1f9fe4 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/contents/ContentService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/contents/ContentService.scala
@@ -14,7 +14,7 @@ import net.yoshinorin.qualtet.domains.contentTaggings.{ContentTagging, ContentTa
 import net.yoshinorin.qualtet.domains.robots.{Attributes, Robots, RobotsService}
 import net.yoshinorin.qualtet.domains.tags.{Tag, TagId, TagName, TagService}
 import net.yoshinorin.qualtet.domains.series.{Series, SeriesName, SeriesService}
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.syntax.*
 
 class ContentService[F[_]: Monad](
@@ -28,7 +28,7 @@ class ContentService[F[_]: Monad](
   seriesService: SeriesService[F],
   contentSerializingService: ContentSerializingService[F]
 )(using
-  transactor: Transactor[F, IO]
+  transactor: Executer[F, IO]
 ) {
 
   def upsertActions(data: Content): Action[Int] = {
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/search/SearchService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/search/SearchService.scala
index 2bbbee2b..8524710a 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/search/SearchService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/search/SearchService.scala
@@ -6,7 +6,7 @@ import cats.implicits.*
 import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.config.SearchConfig
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.message.Fail.UnprocessableEntity
 import net.yoshinorin.qualtet.message.{Error => Err}
 import net.yoshinorin.qualtet.types.Points
@@ -17,7 +17,7 @@ import scala.annotation.tailrec
 class SearchService[F[_]: Monad](
   searchConfig: SearchConfig,
   searchRepository: SearchRepository[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def actions(query: List[String]): Action[Seq[(Int, ResponseSearch)]] = {
     Continue(searchRepository.search(query), Action.done[Seq[(Int, ResponseSearch)]])
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/series/SeriesService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/series/SeriesService.scala
index 7a5eef1e..08d3a2ef 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/series/SeriesService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/series/SeriesService.scala
@@ -5,7 +5,7 @@ import cats.Monad
 import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.domains.articles.ArticleService
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.message.Fail.NotFound
 import net.yoshinorin.qualtet.syntax.*
 import wvlet.airframe.ulid.ULID
@@ -13,7 +13,7 @@ import wvlet.airframe.ulid.ULID
 class SeriesService[F[_]: Monad](
   seriesRepository: SeriesRepository[F],
   articleService: ArticleService[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def upsertActions(data: Series): Action[Int] = {
     Continue(seriesRepository.upsert(data), Action.done[Int])
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/sitemaps/SitemapService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/sitemaps/SitemapService.scala
index 19e454b9..2f9cf367 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/sitemaps/SitemapService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/sitemaps/SitemapService.scala
@@ -5,13 +5,13 @@ import cats.Monad
 import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.cache.CacheModule
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.domains.Cacheable
 
 class SitemapService[F[_]: Monad](
   sitemapRepository: SitemapsRepository[F],
   cache: CacheModule[String, Seq[Url]]
-)(using transactor: Transactor[F, IO])
+)(using transactor: Executer[F, IO])
     extends Cacheable {
 
   private val cacheKey = "sitemaps-full-cache"
diff --git a/src/main/scala/net/yoshinorin/qualtet/domains/tags/TagService.scala b/src/main/scala/net/yoshinorin/qualtet/domains/tags/TagService.scala
index 76b7f910..62b7d438 100644
--- a/src/main/scala/net/yoshinorin/qualtet/domains/tags/TagService.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/domains/tags/TagService.scala
@@ -6,7 +6,7 @@ import cats.implicits.*
 import net.yoshinorin.qualtet.actions.Action.*
 import net.yoshinorin.qualtet.actions.{Action, Continue}
 import net.yoshinorin.qualtet.domains.contentTaggings.ContentTaggingService
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 import net.yoshinorin.qualtet.message.Fail.NotFound
 import net.yoshinorin.qualtet.domains.contents.ContentId
 import net.yoshinorin.qualtet.syntax.*
@@ -14,7 +14,7 @@ import net.yoshinorin.qualtet.syntax.*
 class TagService[F[_]: Monad](
   tagRepository: TagRepository[F],
   contentTaggingService: ContentTaggingService[F]
-)(using transactor: Transactor[F, IO]) {
+)(using transactor: Executer[F, IO]) {
 
   def bulkUpsertActions(data: Option[List[Tag]]): Action[Int] = {
     data match {
diff --git a/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Transactor.scala b/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Executer.scala
similarity index 92%
rename from src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Transactor.scala
rename to src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Executer.scala
index d76da671..59ea6d6a 100644
--- a/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Transactor.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/Executer.scala
@@ -3,7 +3,7 @@ package net.yoshinorin.qualtet.infrastructure.db
 import cats.Monad
 import net.yoshinorin.qualtet.actions.Action
 
-trait Transactor[F[_], G[_]: Monad] {
+trait Executer[F[_], G[_]: Monad] {
   def perform[R](a: Action[R]): F[R]
   def transact[T](t: F[T]): G[T]
   def transact[R](a: Action[R]): G[R]
diff --git a/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieTransactor.scala b/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieExecuter.scala
similarity index 94%
rename from src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieTransactor.scala
rename to src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieExecuter.scala
index 075583a6..89e637b6 100644
--- a/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieTransactor.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/infrastructure/db/doobie/DoobieExecuter.scala
@@ -10,9 +10,9 @@ import cats.effect.*
 import cats.effect.IO
 import net.yoshinorin.qualtet.actions.{Action, Continue, Done}
 import net.yoshinorin.qualtet.config.DBConfig
-import net.yoshinorin.qualtet.infrastructure.db.Transactor
+import net.yoshinorin.qualtet.infrastructure.db.Executer
 
-class DoobieTransactor(config: DBConfig) extends Transactor[ConnectionIO, IO] {
+class DoobieExecuter(config: DBConfig) extends Executer[ConnectionIO, IO] {
 
   val executors: ExecutorService = Executors.newCachedThreadPool()
   val executionContexts: ExecutionContextExecutor = scala.concurrent.ExecutionContext.fromExecutor(executors)
diff --git a/src/main/scala/net/yoshinorin/qualtet/tasks/CreateAuthor.scala b/src/main/scala/net/yoshinorin/qualtet/tasks/CreateAuthor.scala
index f8941365..2deac733 100644
--- a/src/main/scala/net/yoshinorin/qualtet/tasks/CreateAuthor.scala
+++ b/src/main/scala/net/yoshinorin/qualtet/tasks/CreateAuthor.scala
@@ -6,7 +6,7 @@ import doobie.ConnectionIO
 import org.slf4j.LoggerFactory
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder
 import net.yoshinorin.qualtet.domains.authors.{Author, AuthorDisplayName, AuthorName, AuthorRepository, AuthorService, BCryptPassword}
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import net.yoshinorin.qualtet.Modules.*
 import net.yoshinorin.qualtet.syntax.*
 import net.yoshinorin.qualtet.domains.authors.ResponseAuthor
@@ -17,7 +17,7 @@ object CreateAuthor {
 
   private val logger = LoggerFactory.getLogger(this.getClass)
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
   val authorRepository: AuthorRepository[ConnectionIO] = summon[AuthorRepository[ConnectionIO]]
   val authorService = new AuthorService(authorRepository)
 
diff --git a/src/test/scala/net/yoshinorin/qualtet/auth/AuthServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/auth/AuthServiceSpec.scala
index 9fcf86fa..47f130ca 100644
--- a/src/test/scala/net/yoshinorin/qualtet/auth/AuthServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/auth/AuthServiceSpec.scala
@@ -5,14 +5,14 @@ import net.yoshinorin.qualtet.domains.authors.ResponseAuthor
 import net.yoshinorin.qualtet.message.Fail.{NotFound, Unauthorized}
 import net.yoshinorin.qualtet.Modules.*
 import net.yoshinorin.qualtet.fixture.Fixture.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import org.scalatest.wordspec.AnyWordSpec
 import cats.effect.unsafe.implicits.global
 
 // testOnly net.yoshinorin.qualtet.auth.AuthServiceSpec
 class AuthServiceSpec extends AnyWordSpec {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
 
   val a: ResponseAuthor = authorService.findByName(author.name).unsafeRunSync().get
   val a2: ResponseAuthor = authorService.findByName(author2.name).unsafeRunSync().get
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/contentSerializing/ContentSerializingServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/contentSerializing/ContentSerializingServiceSpec.scala
index f3789eac..1e24f37a 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/contentSerializing/ContentSerializingServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/contentSerializing/ContentSerializingServiceSpec.scala
@@ -4,7 +4,7 @@ import net.yoshinorin.qualtet.domains.contents.{Path, RequestContent}
 import net.yoshinorin.qualtet.domains.robots.Attributes
 import net.yoshinorin.qualtet.domains.series.*
 import net.yoshinorin.qualtet.fixture.Fixture.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import net.yoshinorin.qualtet.Modules.*
 import org.scalatest.wordspec.AnyWordSpec
 import org.scalatest.BeforeAndAfterAll
@@ -15,7 +15,7 @@ import org.scalatest.Ignore
 @Ignore // TODO: write testcode when implement delete feature
 class ContentSerializingServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
 
   val requestSeries: RequestSeries = RequestSeries(
     title = "Content Serializing Service Spec",
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
index b07e7258..92c628a5 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/contentTaggings/ContentTaggingServiceSpec.scala
@@ -3,7 +3,7 @@ package net.yoshinorin.qualtet.domains.contentTaggings
 import net.yoshinorin.qualtet.domains.contents.{Path, RequestContent}
 import net.yoshinorin.qualtet.domains.robots.Attributes
 import net.yoshinorin.qualtet.fixture.Fixture.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import net.yoshinorin.qualtet.Modules.*
 import org.scalatest.wordspec.AnyWordSpec
 import org.scalatest.BeforeAndAfterAll
@@ -13,7 +13,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.domains.contentTaggings.ContentTaggingServiceSpec
 class ContentTaggingServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
 
   val requestContents: List[RequestContent] = {
     List(1, 2)
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/series/SeriesServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/series/SeriesServiceSpec.scala
index bf944cee..48cc9478 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/series/SeriesServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/series/SeriesServiceSpec.scala
@@ -3,7 +3,7 @@ package net.yoshinorin.qualtet.domains.tags
 import net.yoshinorin.qualtet.domains.contents.Path
 import net.yoshinorin.qualtet.domains.series.{RequestSeries, SeriesName}
 import net.yoshinorin.qualtet.fixture.Fixture.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import net.yoshinorin.qualtet.Modules.*
 import org.scalatest.wordspec.AnyWordSpec
 import org.scalatest.BeforeAndAfterAll
@@ -13,7 +13,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.domains.SeriesServiceSpec
 class SeriesServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
 
   val requestSeries: List[RequestSeries] = List(
     RequestSeries(
diff --git a/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala b/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
index f1d06e0e..ac992adb 100644
--- a/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/domains/tags/TagServiceSpec.scala
@@ -2,7 +2,7 @@ package net.yoshinorin.qualtet.domains.tags
 
 import net.yoshinorin.qualtet.domains.contents.Path
 import net.yoshinorin.qualtet.fixture.Fixture.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import net.yoshinorin.qualtet.Modules.*
 import org.scalatest.wordspec.AnyWordSpec
 import org.scalatest.BeforeAndAfterAll
@@ -13,7 +13,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.domains.TagServiceSpec
 class TagServiceSpec extends AnyWordSpec with BeforeAndAfterAll {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(config.db)
 
   val requestContents = makeRequestContents(10, "tagService")
 
diff --git a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
index c6e0eaa4..8f419811 100644
--- a/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/fixture/Fixture.scala
@@ -41,7 +41,7 @@ import net.yoshinorin.qualtet.domains.feeds.FeedService
 import net.yoshinorin.qualtet.domains.articles.ResponseArticleWithCount
 import net.yoshinorin.qualtet.Modules
 import net.yoshinorin.qualtet.syntax.*
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import cats.effect.unsafe.implicits.global
 import net.yoshinorin.qualtet.domains.series.{RequestSeries, SeriesName}
 
@@ -56,7 +56,7 @@ object Fixture {
   val p: String = Modules.config.http.port.toString()
   val host = Uri.unsafeFromString(s"http://${h}:${p}")
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(Modules.config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(Modules.config.db)
   given log4catsLogger: Log4CatsLoggerFactory[IO] = Log4CatsSlf4jFactory.create[IO]
 
   // TODO: from config for cache options
diff --git a/src/test/scala/net/yoshinorin/qualtet/infrastructure/db/MigratorSpec.scala b/src/test/scala/net/yoshinorin/qualtet/infrastructure/db/MigratorSpec.scala
index 55502523..a19b7b04 100644
--- a/src/test/scala/net/yoshinorin/qualtet/infrastructure/db/MigratorSpec.scala
+++ b/src/test/scala/net/yoshinorin/qualtet/infrastructure/db/MigratorSpec.scala
@@ -2,7 +2,7 @@ package net.yoshinorin.qualtet.infrastructure.db
 
 import net.yoshinorin.qualtet.fixture.Fixture.contentTypeService
 import net.yoshinorin.qualtet.Modules
-import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieTransactor
+import net.yoshinorin.qualtet.infrastructure.db.doobie.DoobieExecuter
 import org.scalatest.wordspec.AnyWordSpec
 
 import cats.effect.unsafe.implicits.global
@@ -10,7 +10,7 @@ import cats.effect.unsafe.implicits.global
 // testOnly net.yoshinorin.qualtet.infrastructure.db.MigratorSpec
 class MigratorSpec extends AnyWordSpec {
 
-  given dbContext: DoobieTransactor = new DoobieTransactor(Modules.config.db)
+  given dbContext: DoobieExecuter = new DoobieExecuter(Modules.config.db)
 
   "Migrator" should {