feat: do not cache queries that are part of a transaction

Author: gajus

README.md

@@ -14,6 +14,10 @@ Query cache interceptor is initialised using a custom storage service. The [Exam
 
 Which queries are cached is controlled using cache attributes. Cache attributes are comments starting with `-- @cache-` prefix. Only queries with cache attributes are cached (see [Cache attributes](#cache-attributes))
 
+## Behavior
+
+* Does not cache queries inside of a transaction
+
 ## Cache attributes
 
 |Cache attribute|Description|Required?|Default|

src/factories/createQueryCacheInterceptor.ts

@@ -45,6 +45,10 @@ export const createQueryCacheInterceptor = (configurationInput: ConfigurationInp
 
   return {
     beforeQueryExecution: async (context, query) => {
+      if (context.transactionId) {
+        return null;
+      }
+
       const cacheAttributes = (context.sandbox as Sandbox).cache?.cacheAttributes;
 
       if (!cacheAttributes) {
@@ -64,6 +68,10 @@ export const createQueryCacheInterceptor = (configurationInput: ConfigurationInp
       return null;
     },
     beforeQueryResult: async (context, query, result) => {
+      if (context.transactionId) {
+        return null;
+      }
+
       const cacheAttributes = (context.sandbox as Sandbox).cache?.cacheAttributes;
 
       if (cacheAttributes) {
@@ -73,6 +81,10 @@ export const createQueryCacheInterceptor = (configurationInput: ConfigurationInp
       return null;
     },
     beforeTransformQuery: async (context, query) => {
+      if (context.transactionId) {
+        return null;
+      }
+
       const cacheAttributes = extractCacheAttributes(query.sql);
 
       if (!cacheAttributes) {