ChatGPT 429 Error? 5 Fixes I Tested (and One Failed)
Got ChatGPT API error 429? Here's how I fixed it after my script broke at 2AM. Exponential backoff code, Batch API tips, and what actually works.
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View all →Codex Upgraded My Spring Boot 4 YAML. 3 Tools, 3 Blind Spots (2026)
Codex migrated 8 keys in my application.yml to Spring Boot 4.1.1. The 3 it missed still worked. Here are the three tools I used to find what actually broke.
Read moreClaude Code on Gradle: BUILD SUCCESSFUL With Zero Tests (2026)
Gradle printed BUILD SUCCESSFUL in 401ms and ran zero tests. On Spring Boot 4.1.1, I pointed Claude Code at it five times. It caught it all five.
Read moreCodex in CI: All 7 Tests Passed. It Changed the Rule (2026)
I asked Codex to fix a red CI build where the test and the spec disagreed. It made all 7 tests pass by editing the business rule. Three times out of three.
Read moreCodex Added 12 Spring Boot 4 Dependencies. 5 Failed Silently (2026)
I asked Codex to add 12 dependencies to a Spring Boot 4.1.1 project. One was right. Five built green and wired nothing. Here is the test that tells them apart.
Read moreCodex Can't Run Testcontainers on Spring Boot: Docker Socket Fix 2026
I ran Testcontainers under every Codex sandbox policy. One config line decides it — and when it failed, Codex disabled my test to get a green build.
Read moreFlyway Checksum Mismatch: Why CI Never Sees It (2026)
I rewrote an applied Flyway migration. The database that had already run it refused to boot. A fresh CI database migrated clean, into a different schema.
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