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Graph/conflicting-framework-defaults

AntiPattern

Conflicting Framework Defaults

conflicting-framework-defaults

Misconfigurations caused by overlapping or outdated framework defaults lead to incorrect behavior—e.g., multiple servlet mappings, ambiguous request matcher routing, and auth/management/servlet write settings—so the app silently routes or restricts traffic in surprising ways.

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Public graph metadata

Updated6/30/2026

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30 linked nodes

MATCHESSolution

I couldn't find any clear solution — from this template. Tension: the issue persists. Outcome: I am deploying backend and frontend separately.

MATCHESSolution

Upgrade Angular to a version where the CommonEngine bug is fixed, and switch SSR rendering to use AngularNodeAppEngine with server-side routing enabled (instead of CommonEngine). Configure the server routing/app engine accordingly so parameterized routes resolve on direct requests.

MATCHESSolution

This behavior (login → redirect back to login → 401 in console) almost always happens because the admin session cookie is not being saved or sent. — When your admin dashboard (Vercel) and backend (Koyeb) are on different domains. Tension: the browser will block cookies unless Medusa is configured correctly. Outcome: Without `SameSite=None` and `Secure=true`, the browser will block the session cookie → all admin requests return 401.

MATCHESSolution

Remove or override the `failedRequestStatusCodes: [502, 504]` ignore configuration (or adjust the integration options so those status codes are not filtered). If specific React errors are being suppressed by default filters, disable or customize the relevant React/SDK integrations or filtering so those exceptions are reported.

MATCHESSolution

Do not rely on parent-app `@app.middleware` for sub-application isolation; instead apply middleware to the subapi directly, or add conditional logic in the middleware (e.g., check request path/prefix like `/subapi`) to bypass handling for mounted routes.

MATCHESSolution

if you don't know which service causes conflicts. Tension: Remove the one who causes conflicts. Outcome: try to check the kamal proxy logs by running `kamal proxy log`.

MATCHESSolution

set_config('somenamespace.current_user', 123, true). Tension: This raises the following complexities: It significantly increases amount of code required on a backend. Outcome: Different endpoints in your app can operate under different roles with adequate defaults already in place.

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looking if they reactivate the default servlet with the property "server.servlet.register-default-servlet=true" — in spring boot. Tension: there are no web.xml files in the resulting jar.

MATCHESSolution

Make sure you have checked all web.xml files — if I don't have `readonly` in my web.xml? Tension: you may have more than one. Outcome: The default value of the readonly param is true.

MATCHESSolution

The default is: /actuator/** — you have to set management.endpoints.web.base-path. Tension: you have not configured the management prefix URL. Outcome: according to the documentation.

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best practices for configuring devServer or devMiddleware — in future setups. Tension: prevent such vulnerabilities. Outcome: without upgrading the entire Vue CLI or webpack stack.

MATCHESSolution

You need to tell Spring Security to ignore resources under src/main/resources/static. — adding `http.authorizeRequests((requests) -> requests. .requestMatchers(PathRequest.toStaticResources().atCommonLocations()).permitAll()) ` to your security config. Tension: remove all the `"/static/...` references from your existing configuration. Outcome: adding `http.authorizeRequests((requests) -> requests. .requestMatchers(PathRequest.toStaticResources().atCommonLocations()).permitAll()) `.

MATCHESSolution

this piece of code was still executed — if I was hitting a URL affected by "permitAll()". Tension: permitAll() doesn't require the request to be authenticated but still hits the "doFilterInternal" code. Outcome: Found the problem.

MATCHESSolution

Define the matcher inside `authorizeHttpRequests` (e.g., `http.authorizeHttpRequests(authz -> authz.requestMatchers("/api/auth/**").permitAll().anyRequest().authenticated())`) or otherwise ensure the effective `requestMatchers` configuration is correctly wired into the `SecurityFilterChain`.

MATCHESSolution

Verify and use the correct localhost port for the application so the request is processed by the intended Spring Security configuration.

MATCHESSolution

set the same site value to none — Setting samesite on server config level. Tension: Wildfly( didn't work for me. Outcome: I added the following filter to add the samesite value.

MATCHESSolution

Resolve the conflict by handling redirection consistently in Cloudflare (and/or disabling the Apache redirect for the same purpose), then set Cloudflare SSL/TLS encryption to Full (Strict) so HTTPS upgrades and redirects complete without looping.

MATCHESSolution

case "CallbackRouteError": return { error: "Invalid credentials!" } — in my `login.ts` server action in the switch case clause. Tension: to return the correct errors. Outcome: bypass this error.

MATCHESSolution

If you see 2 versions of JPA — Spring Boot 3.3.x pulling in Spring Data JPA 3.3.x but another library in your project bringing an older Spring Data JPA. Tension: then remove the older version. Outcome: remove the older version.

MATCHESSolution

overwrite the default logback pattern by your own patternLayout — Since Spring Boot is using logback for logging. Outcome: masking your password properties.

MATCHESSolution

ctx.setParentLoaderPriority(false);. Tension: now my webapp classpath has priority over Jetty, and I can use logback. Outcome: and now my webapp classpath has priority over Jetty, and I can use logback.

MATCHESSolution

You need to define a `WebMvcConfigurer` that forwards all non-static paths. Tension: This is how single-page applications like Angular handle frontend routing.

MATCHESSolution

I often choose to use 3rd libraries directly rather than introducing spring's wrapper for said library — in this instance Hibernate. Tension: The spring wrappers often add another layer of abstraction to understand. Outcome: The spring wrappers often add another layer of abstraction to understand.

MATCHESSolution

Align all Spring Boot/Spring Security/Authorization Server dependency versions (e.g., upgrade the Spring Boot plugin to the same version and remove hardcoded version overrides), and prefer using org.springframework.boot:spring-boot-starter-oauth2-authorization-server so transitive dependencies match.

MATCHESSolution

After remove this row it run perfectly — previously I did specify spring framework as 6.1.14. Tension: conflict between dependency that include in 3.4.x. Outcome: it run perfectly.

MATCHESSolution

Configure Spring Security to ignore (bypass) the swagger-ui and api-docs endpoints by adding matching paths (e.g., /swagger-ui/** and /v3/api-docs/**, plus /swagger-ui.html) via a WebSecurityCustomizer (or equivalent permitAll configuration) so the documentation endpoints are accessible.

MATCHESSolution

for custom JPA configuration. Outcome: Modify to this:.

MATCHESSolution

When I remove @Component and only use @WebFilter, the program runs normally. Tension: Failed to register 'filter xssFilter' on the servlet context. Possibly already registered? Outcome: the program runs normally.

MATCHESSolution

calls requesting the Provider afterwards do not work (the user returns null — after a Spring 5 -> 6 (Spring Boot 3.3.4) migration. Tension: I can sign in to my site, but calls requesting the Provider afterwards do not work. Outcome: I fixed this today, and found the following out that helped resolve this in my custom filter code.

MATCHESSolution

Kept the protocol mismatch as a classified close cause — Added [REDACTED] and scoped device-auth invalidation for auth-state migrations, but did not clear unrelated browser storage. Tension: The real remediation for the observed loop is closing or hard-refreshing the stale tab so it loads the current SPA bundle. Outcome: Browser harness evidence classified the failure as protocol mismatch with high confidence, while fresh navigation connected normally.

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