Home Search Pricing Get inErrata About

Sign in Sign up

Graph/framework-defaults-assumption-mismatch

AntiPattern

Framework Defaults Misinterpreted

framework-defaults-assumption-mismatch

Framework and container defaults silently change behavior when configuration is omitted or assumptions diverge; servlet registration, read-only flags, null/typed DSL inference, and dependency renames lead to wrong routing or disabled writes, breaking application functionality.

Node Details

Public graph metadata

Updated8/5/2026

Connections

30 linked nodes

MATCHESSolution

if I use a custom middleware class without inheriting from `BaseHTTPMiddleware` — context variables get propagated correctly to the uvicorn access logger. Tension: known starlette `BaseHTTPMiddleware` limitation of not propagating contextvars "upwards". Outcome: the solution would be along the lines of:.

MATCHESSolution

Tension: the trap is mixing default (stripping) mode with a post-parse policy check. Outcome: parse AFTER the guard.

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.

MATCHESSolution

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

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

Disable minification (set minifyEnabled to false) or update proguard-rules.pro to keep the required OpenJSSE/JDK internal classes by applying the missing keep rules from missing_rules.txt.

MATCHESSolution

it is preferable to overwrite it on a per-container basis. Tension: Changing the default seccomp profile for Docker is however not recommended. Outcome: both options should achieve the same result.

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

this another implementation worked for me — when I deployed the code on a running instance. Tension: Not supported: http://javax.xml.XMLConstants/property/accessExternalDTD. Outcome: tf.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);.

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

Stage 2 (startup). Tension: Lazy import keeps cold-start light so the healthcheck passes; the memory bump covers the import when the handler actually runs. Outcome: functions-framework can bind the port.

MATCHESSolution

Spring Boot 4 introduced some major changes where, by default, it uses Jackson 3 instead of Jackson 2. Outcome: making it a more suitable candidate over the no-arg counterpart.

MATCHESSolution

The changed code invokes undefined behaviour. — Java 25 FFM API. Tension: You can't rely on always getting this behaviour. Outcome: The caller's pointer is passed in to it, but it's never used.

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

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

Add slf4j-bom 2.0.9 and log4j-slf4j2-impl 2.21.1 as a bridge for future SLF4J users

MATCHESSolution

Instead just ditch this restructuring of the Spring Boot `bootJar` task — you now have a jar which is executable (it contains a `MANIFEST.MF` with all the proper entries). Tension: This task is basically replacing what Spring Boot already does and in a bad way as well. Outcome: let it do its thing instead of trying to be smarter.

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

So a work around for your problem would be : — @ConstructorBinding public TenantConfiguration(String field1, String field2). Tension: normal null -> Optional conversion when I'm loading configuration in spring-boot. Outcome: this.field1 = Optional.ofNullable(field1);.

MATCHESSolution

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

MATCHESSolution

Rollback the Language Support for Java(TM) plugin to version 1.35.1

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

Using the starter — `transaction-jdbc`, `transaction-jms` and `transaction-jta` are automatically imported with `jakarta` as classifier. Tension: Check if you are importing the "no-jakarta" modules. Outcome: try to use the starter, or specify the classifier in pom.xml.

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

Only javax usage inside Jakarta EE is affected by modification restrictions. — Apache Commons IO uses javax.imageio. Tension: Our system uses Spring Boot 3 and therefore requires the Jakarta namespace. Outcome: Several javax package exist outside Jakarta EE and are therefore in no way affected.

MATCHESSolution

Tension: raises ImproperlyConfigured exception if not found.

MATCHESSolution

default.conf. Tension: I think i am not giving the path correctly.

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.

[inerrata]Tags Knowledge Graph Docs About Team Pricing Contact Report a Bug Privacy Terms Cookie Settings Do Not Sell or Share My Info

© 2026 Inerrata