Aug 3

The Trim Horizon Of AWS Kinesis And The Concept Of Checking

The concern is documenting the concept of TRIM HORIZON and CHECKING in AWS Kinesis. This opens the understanding of the errors I am seeing these days such as The consumer has checkpointed the shard at TRIM_HORIZON but hasn't started processing it 1. SHARDS, STREAMS, AND ITERATORS TRIM_HORIZON is the type of shard iterator shard is…

AWS

1 min read

Aug 2

The Most Interesting Tech Reads In July

BJARNE STROUSTRUP ON LEX FRIDMAN PODCAST — https://lexfridman.com/bjarne-stroustrup/ Happy families are all alike; every unhappy family is unhappy in its own way, is perhaps the famous first sentence of any novel It reminded me of Bjarne’s contracting observation which could be paraphrased as Messy code is all alike, every beautiful peace of code is beautiful in its…

Productivity

2 min read

Jul 29

How to set up AWS CLI

The aim of this page📝 is to quickly setup AWS CLI. 1. PIP install pip install awscli --upgrade --user 2. CREDS Open the following URL  https://<region>.console.aws.amazon.com/iam/home#/users/<user>?section=security_credentials  https://us-east-1.console.aws.amazon.com/iam/home#/users/pavol@gmail.com?section=security_credentials Make sure you have programmatic access

AWS

1 min read

Jul 26

How to Define Static Method in Python

The aim of this page📝 is to define how static methods can be defined in Python. Let’s create a _generate_serial() function that will generate a new serial number in a small class for shipping containers. The name static method is an anachronism in Python — it refers to the keyword…

Python

1 min read

Jul 17

How To Share A Global Variable Across Files And Modules In Python

The aim of this page📝 is to share how I make certain variables accessible for different modules/files in Python. — I do this not to repeat myself (DRY principle) I am not using global keyword (no help here) I am simplifying the approach from stack overflow My use is in my short Jirc (Jira Card from Terminal) script My global variable is a path to a config file that I…

Python

1 min read

Jul 16

Implementing Class Attributes in Python Classes

The aim of this page📝 is to show how class attributes are defined and used in Python. tl;dr: use <ClassName> prefix for class attributes and self prefix for instance attributes Warning: there are the notes from the wonderful https://www.pluralsight.com/courses/core-python-classes-object-orientation 1. INTRO NOTES Class attributes pertain to the whole class, not to an instance…

Python

2 min read

Jul 15

How To Replace Repeated Loops With Higher Order Functions In Python

The aim of this page📝is to follow Uncle Bob’s dictum of DRY for nested loops where I should pass lambda do to the job. This is the Python implementation of an answer to Uncle Bob’s question raised in Don’t Repeat Yourself (DRY principle) …but what do you do when it’s…

Python

2 min read

Jul 11

Explaining Why Noisy Alerting is Dangerous

Personal experience enriched by Google’s SRE Book / Dan Luu’s Post-Mortem Research — The aim of this page📝 is to connect the assertion with experience — as of writing this, I am cleaning up and reflecting on a data delivery outage caused by my team for a very noisy pipeline firing latency alerts because of suboptimal data warehouse configuration. We got accustomed to…

Dev Ops

2 min read

Jul 8

How To Undo A Change In Particular File In Git

The aim of this page📝 is to help checking how could I undo changes to multiple files from various pull requests ideally with a single command. 1. NEW WAY / MY CASE no simple way with a single command, got to go one-by-one; need a commit SHA + filepath it is using restore - not reset…

Git

2 min read

Jul 6