2 Weeks Challenge of ‘AWS Certified Solutions Architect – Associate’


New year new resolutions. I have just setup a 2 weeks challenge for myself - get the 'AWS Certified Solution Architect - Associate'. Exam has been booked for 31/Jan, no prep has been done yet. Updates: 16/Jan: book exam for 31/Jan References: AWS Certified Solutions Architect Associate Exam Blueprint A curated list of AWS resources to … Continue reading 2 Weeks Challenge of ‘AWS Certified Solutions Architect – Associate’

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Redis CPU Usage Ramps Up after Kernel Patching


I guess you have heard the name of Meltdown and Spectre already. If not, check out this site https://meltdownattack.com/. Definitely, it is not a good start of a New Year. All Cloud providers are busy with patching the kernel of their underlying systems. AWS Elastic cache (Redis) is one of them. Due to its single threaded nature, … Continue reading Redis CPU Usage Ramps Up after Kernel Patching

Things you need to know about AWS VPC based Lambda


There are two types of AWS Lambda networking settings: No VPC and VPC-based. The major difference is that VPC-based Lambda allows you to access the resources in your VPC, e.g your EC2 resources sitting in the private subnets. No VPC lambda only can access Internet by default. Before you choose to use VPC-based lambda, there … Continue reading Things you need to know about AWS VPC based Lambda

CrowdLess – Make Crowd less crowded


Crowd is Atlassian centralized identity management tool. Since Crowd 2.7, the Active Directory Connector is able to sync the disabled flag from Active Directory to Crowd. But if you are using older version or other connectors (e.g Delegated Authentication Directory), then you may run into the issue that users are disabled in Active Directory are … Continue reading CrowdLess – Make Crowd less crowded