How to solve IllegalArgumentException: Request header is too large in spring boot When migrating a spring boot application to cloud, multiple layers got added to serve traffic.
On prem: nginx -> spring boot app (tomcat) Azure: nginx -> azure application gateway -> nginx ingress controller -> spring boot app(tomcat) In Azure, we noticed that some of http requests threw 400 http status code in our logs.
While investigating further, we found the reason IllegalArgumentException: Request header is too large...
Recently, I encountered sql state 42000 error in a spring boot application while moving from MySQL version 5.6 to 8.0. After inspecting stack trace and some googling, I got to know that few default configurations have changed in MySQL 8.0 (as expected 😃 ).
This caused our poorly written queries to fail during migration.
Background Lets look at sample query using spring-data jpa to gather some analytics by aggregating data about a customer ordering products...
When working as a backend engineer, it is essential to document the REST APIs. It also helps in providing a UI(swagger-ui) to test the REST calls. Let us try to integrate springdoc-openapi to provide swagger documentation for a spring boot project using spring-security(OAuth2).
Add the dependencies to build.gradle 1 2 3 implementation("org.springdoc:springdoc-openapi-ui:1.6.8") implementation("org.springdoc:springdoc-openapi-security:1.6.8") implementation("org.springdoc:springdoc-openapi-kotlin:1.6.8") Kotlin code example The following example showcases spring configuration to create OpenAPI bean which supports two authentication mechanism:...