Some problems and its solutions

bele case ola bilerki postgres bazada int ve ya string tipde array saxlansin . bu arrayla entityde hibernate vasitesile ishlemek uchun bir solution lazimdir  bunu uchun gradle da  implementation 'com.vladmihalcea:hibernate-types-52:2.7.0'    bu dependecy lazimdir bunun maven versiyasini da tapmaq olar . indi ise kod numunesine baxaq: @Entity(name = "Event") @Table(name = "event") @TypeDefs({     @TypeDef(         name = "string-array",         typeClass = StringArrayType.class     ),     @TypeDef(         name = "int-array",         typeClass = IntArrayType.class     ) }) public static class Event extends BaseEntity {     @Type( type = "string-array" )     @Column(         name = "sensor_names",         columnDefinition = "text[]"     )     private String[] sensorNames; ...

 https://www.partitionwizard.com/partitionmanager/size-vs-size-on-disk.html

about scaling: https://medium.com/@harithjaved/scaling-your-web-application-693657ce333c  about microservices: https://morioh.com/p/4d79069e1cc5  https://gravitational.com/blog/microservices-containers-kubernetes/ about docker: https://medium.com/devopsturkiye/docker-seriyas%C4%B1-i-hiss%C9%99-docker-n%C9%99dir-nec%C9%99-i%C5%9Fl%C9%99yir-b57677d92ee6 about kubernetes https://medium.com/pashabank/kubernetes-n%C9%99dir-15b6081227f2 Data consistency: https://dilfuruz.medium.com/data-consistency-in-microservices-architecture-5c67e0f65256 Database management , patterns, all things about managing https://relevant.software/blog/microservices-database-management/

IP adress explanation: https://whatismyipaddress.com/ipv4-parts BIOS,CMOS,UEFI what is and difference among them: https://www.youtube.com/watch?v=LGz0Io_dh_I All videos about hardware: https://www.youtube.com/channel/UCJQJ4GjTiq5lmn8czf8oo0Q https://www.youtube.com/channel/UCbiGcwDWZjz05njNPrJU7jA M.2 NVMe SSD and normal SSD difference: https://www.youtube.com/watch?v=HvfIeTieXOI Explaining PCIe slots: https://www.youtube.com/watch?v=PrXwe21biJo WD Black NVMe SSD , explaining SSD types: https://www.youtube.com/watch?v=kvHUVcgo8xY RAM Explained - Random Access Memory: https://www.youtube.com/watch?v=PVad0c2cljo

 https://novicestuffs.wordpress.com/2017/04/25/how-to-uninstall-java-from-linux/

 hibernate 2 cur cache memory var: L1(Level bir) burada entitymanager a aiddir. bazadan gelen entityler cacheda saxlanir ve her entitymanagere xasdir L2(level 2) burada ise umumiyyetle EntityManagerFactory ye xidmet eden entiymanagerler arasinda shared cache memorydir ve level 1 den daha uzun muddetlidir level 2 cache i aktivleshdirmek uchun dependency elave edilir projecte ve 1-2 config edilir Javada 4 cur reference type var : https://dzone.com/articles/reference-types-java-part-1 Strong references. Soft references. Weak references. Phantom references entitymanager de weak referance var , ve o strongla muqayisede GC terefinden istenilen an siline biler ram lazim olsa. soft referance - strongdan zeif , weakdan gucludur ve GC onu ancaq en vacib hallarda sile biler, weak i her memory chatmiyanda sile biler ama softu ancaq outofmemory alacagi teqdirde silib ishlede biler ve soft un omru uzun olur . ve Level 2 cache da istifade edir bunu hibernate. burda da bele shey varki , LRU(last r...

With using this approach we can get any of field of entity and this way is more efficient rather than get all entity fileds , example in below: @Repository public interface CompanyRepo extends JpaRepository<Company, Long> {     Integer countById(long id);     <T extends CompanyViewProtocol> Optional<T> findById(long id, Class<T> type); } public interface CompanyViewProtocol { } public interface ContactDetailView extends CompanyViewProtocol {     CompanyContactDetail getContactDetail(); } in there companyRepo.findById(1L,ContactDetailView.class)   gives us CompanyContactDetail