Archives for Software Dev
Books on Quantum Field Theory – Self Learning
Relativistic Quantum Theory - Part 1 -- by Landau Relativistic Quantum Theory Part 2 - by Landau An introduction to Quantum Field Theory - Peskin and Schroder Student Friendly Quantum…
Detachment, Riding a Bicycle, Infinite Inner Potential
Swami Bodhinanda writes about three different stages in yoga. These stages are a) Developing Powers of Concentration and b) Developing Powers of Detachment. c) Combining one and two - COncentration…
AI books – Some Super Interesting Artificial Intelligence Fiction Reads
With the recent attention returning to all things AI, I discovered a few books sitting on my shelves - purely by accident. Their AI threads are strong and well constructed…
Fun Math Fiction Reads
Also read Math Problem Books Math Fiction? Love and math - The Heart of Hidden Reality - Frankel Frankel starts off with the a 'parallel universe' that exists right alongside ours…
Cache Control Header and CDNs
In order to cache dynamic content (server side generated content), the cache-control needs to have the value 'public'. This tells the response that it can be cached server-side. Otherwise, by…
Running Tips for those over 50 – 50 + age runners
For me, the two biggest problem areas have been a) Joint stiffness, strength b) Digestive Issues - including bloating/acidity which can affect a productive run. There is some research that…
Certificate Revoking and Certificate Deletion
With certbot (letsencrypt), and with certificates in general, it is important to think of the full lifecycle of the certificate. Often, folks feel that as long as they have provisioned…
Invalid Document Content Error in running an AWS SSM document
If you are using terraform to create a systems manager document and an SSM association, there are a few hiccups you might encounter Also see this post on Systems Manager…
Installing certbot on an EC2 using AWS Systems Manager
Registering the certbot client and requesting a certificate - sudo yum -y install yum-utils - sudo yum -y install - sudo yum-config-manager --enable rhui-REGION-rhel-server-extras rhui-REGION-rhel-server-optional - sudo yum -y install certbot - sudo certbot register --server {{ CertServerUrl }} -m {{ contactEmail }} --no-eff-email - sudo certbot certonly --server {{ CertServerUrl }} --cert-name {{ certName }} -d {{ certDomains }} --webroot-path {{ webrootPath }} > / The terraform file () # input variables variable "instance_ids" { type = list default = } variable "cert_common_name" { type = string default = "avTestCert" }…
Tokenization versus Encryption vs Data Masking
Tokens are pointers to data - and substitute data (not transform it) Tokenization Pros Use Cases - PCI Data - Credit Card info etc. Tokenization reduces the in-house responsibility of…