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Top 10 Microservices Patterns

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Mostly used Top 10 Microservices Patterns: 1] API Gateway Pattern Single entry point for all client requests, which then routes those requests to the appropriate microservice 2] Circuit Breaker Pattern used to handle failures in a microservices architecture when a microservice fails or becomes unresponsive, the circuit breaker tips and redirects requests to a fallback service 3] Service Registry Pattern used to keep track of all the services in a microservices architecture. The registry acts as a central directory for service discovery 4] Service Mesh Pattern that involves adding a layer of infrastructure between microservices to handle cross-cutting concerns such as service discovery, load balancing and security  5] Event Driven Architecture Pattern that involves using events to communicate between microservices. Each microservices can publish events and subscribe to events published by other microservices. 6] Saga Pattern used to manage transactions that span multiple microservic...

Unix - Linux Command - FAQ

Windows: C:\Users\> hostname ABCDE000123   C:\Users\> wmic bios get serialnumber SerialNumber ABCD123 C:\>  ipconfig/flushdns Linux/Unix: $ uname -a Linux oam-ohs 4.18.0-193.el8.x86_64 #1 SMP Fri Mar 27 14:35:58 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux   $ hostnamectl    Static hostname: oam-ohs          Icon name: computer-vm            Chassis: vm         Machine ID: adaf69d723c14f179ff541b6d37a350b            Boot ID: 6d090b2d2d104957a5ccfffe178b65ca     Virtualization: vmware   Operating System: Red Hat Enterprise Linux 8.2 (Ootpa)        CPE OS Name: cpe:/o:redhat:enterprise_linux:8.2:GA             Kernel: Linux 4.18.0-193.el8.x86_64       Architect...

Troubleshooting OIM - Error - Cause - Solution

Troubleshooting OIM - ORA Error: 1] Catalog search in OIM showing error when user is clicking on Request access Error: IAM-7130125 : Search token caused Oracle text DRG issue, DB exception is :ORA-29902: error in executing ODCIIndexStart() routine ORA-20000: Oracle Text error: ORA-30576: ConText Option dictionary loading error ORA-04031: unable to allocate 24368 bytes of shared memory ("shared pool","CAT_TAGS","KGLH0^eaf287a9","drdmlpo:new policy") 29902 Cause: The error message you provided indicates that there was an issue with Oracle Text and a failure occurred during the execution of the ODCIIndexStart() routine. Additionally, there was a problem with loading the ConText Option dictionary, and the shared pool memory allocation failed. The ORA-29902 error typically occurs when there is a problem with the Oracle Text index. It could be caused by a variety of factors such as incorrect syntax in the query, missing or invalid index metadata, or in...