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Data Transfers
TUTK V1GX3K4WXUC6B672333C 5HBNK58NJ83F57L2333C 193RAF6L3G3CA4E4333C LTYCEUA33JBETG7B333C 427M...
CLI
# to get caller identity: $ aws sts get-caller-identity
CloudWatch
Core component of CloudWatch Metrics collects performance data points, like EC2 CPU, or # of re...
AWS RDS Best Practices
upg.bin.enc reference: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_BestPractices....
TUYA Documents
P2P CheatSheet
What is P2P? It's a general term to describe two machine can communicate directly with each other...
AWS Cheatsheet
Get current logged in user $ aws sts get-caller-identity { "UserId": "AIDA3C6FL2I6WTCTDQ5V7",...
Control Plane Installation
Install Containerd Installation Instructions
Flutter Cheatsheet
Print dependencies tree flutter pub deps -s tree How to get virtual device storage on host machi...
Kafka Cheatsheet
Kafka Fail Reason 1: Lack of Expertise and Resources scaling and implementing Kafka solutions re...
DB Design Tips
Don't use business related field as primary key business related fields examples: individual tax...
Elastic Search Cheatsheet
What is it? a convenience wrapper around Lucene to allow for fast searching in a distributed sys...
Database Indexes
B-Tree Index Pros: fast read, fast range query no limit on number of keys Cons: slow writes ...
Database Replications
Sync vs Async replication sync ensures strong consistency, but slower writes async ensures faste...
Database Comparisons
SQL Databases relational normalized data (minimum duplicate data) Uses B Tree or B+ Tree inde...
Redis Cheatsheet
Key Points in-memory, key-value store supports string, int, hash(map<string, string>), list, set...
MongoDB Cheatsheet
Feature easy to use, well documented similar to SQL B-Tree ACID Transactions Single Leader R...
PostgreSQL CheatSheet
PostgreSQL is: open sourced supports both relational and non-relational (JSON) queries for dynam...
GORM CheatSheet
Import import ( "gorm.io/driver/mysql" "gorm.io/driver/postgres" "gorm.io/gorm" ) func mai...
Fundamentals and High Level Overview
System Design Process Gather requirments Back of envelope calculations API design Architectual d...