![[Spring Boot] Migrating 2.7 to 4.0: A Phased Strategy](/ko/spring-boot-migration-strategy/cover_hu_2741e6a42efc8012.webp)
[Spring Boot] Migrating 2.7 to 4.0: A Phased Strategy
Migrating Spring Boot from 2.7 to 4.0: why jumping straight to 4.0 is a trap, crossing the Jakarta EE chasm, and why the best code is deleted code.
Dynzen - A blog documenting Experience, Understanding & Insight
![[Oracle Cloud #2] VCN Fixes Public IP, Then: Out of Capacity](/ko/oracle-cloud-arm-vcn-setup/cover_hu_23df4dc6da710b86.webp)
[Oracle Cloud #2] VCN Fixes Public IP, Then: Out of Capacity
Creating the VCN first fixed Oracle Cloud's Public IP toggle. But with a 200GB boot volume, Create hit an 'Out of host capacity' error.
![[Oracle Cloud #1] Free ARM Server: 4 Cores, 24GB RAM?](/ko/oracle-cloud-arm-server/cover_hu_1712d3b26a66ac95.webp)
[Oracle Cloud #1] Free ARM Server: 4 Cores, 24GB RAM?
Creating an Always Free ARM (Ampere) instance on Oracle Cloud: AMD vs ARM, the setup steps, and the Public IP issue that stopped me midway.
![[AdSense #6] Finally Approved! Success on the Second Try](/ko/adsense-approval-success/cover_hu_ebc91440431d2f2.webp)
[AdSense #6] Finally Approved! Success on the Second Try
My real experience of getting Google AdSense approval on the second attempt after the first rejection, with consistent content creation and a timeline.
![[Wall Condensation #3] Finishing with Daiso Repair Wallpaper](/ko/diy-wall-condensation-fix-series-3/cover_hu_4f2cd05974ed0df3.webp)
[Wall Condensation #3] Finishing with Daiso Repair Wallpaper
Once the urethane foam repair was fully dry, I finished it off with Daiso repair wallpaper. This post also covers how it's holding up five months later.
![[Model Y Accident #5] Repair Done: Pickup at Dongtan](/ko/tesla-model-y-repair-complete/cover_hu_b830219ea968f616.webp)
[Model Y Accident #5] Repair Done: Pickup at Dongtan
The car is finally back after 3 weeks. Covers the pickup at Dongtan Service Center, plus what changed afterward — driving habits and a tire replacement.
![[Wall Condensation #2] It Ain't Over: Round Two](/ko/diy-wall-condensation-fix-series-2/cover_hu_15dd938a7b02dc3f.webp)
[Wall Condensation #2] It Ain't Over: Round Two
Condensation came back 3 days after the first fix. I tapped the wall to find the new cold-air path by sound and sealed it with urethane foam.
![[AdSense #5] Fee-Free USD Transfer from Hana to Mirae Asset](/ko/hana-mirae-foreign-currency-transfer/cover_hu_3907394e6c9a67ec.webp)
[AdSense #5] Fee-Free USD Transfer from Hana to Mirae Asset
Step by step: moving USD from a Hana Bank Million Dollar Account to a Mirae Asset Securities foreign currency account with no transfer fee.
![[Wall Condensation #1] Dew on the Wall: Finding the Draft](/ko/diy-wall-condensation-fix/cover_hu_75769b10235b84ed.webp)
[Wall Condensation #1] Dew on the Wall: Finding the Draft
Water beaded on my wallpaper one winter morning, and the management office said to fix it myself. How I traced the cold draft and sealed it.
![[Model Y Accident #4] Lost License Plate to Reissue](/ko/tesla-license-plate-reissue-guide/cover_hu_3b39c4f41a81802c.webp)
[Model Y Accident #4] Lost License Plate to Reissue
Losing a license plate in a front-end collision: from the first panic to the police report, the registration office, and updating OBU and insurance.