Learnings

In most of distributed datastore systems, there are a lot of techical terms to describe the behavior of the system. While these terms, like, “Leader”, “Follower”, “Replication”, “Consistency”, etc., are widely used and helpful, what I feel missing are the details about internal relationship between these terms. Analogically, while the map of the field is great, it is also important to understand how the soil, water, and sunlight interact to help the plants grow. ...

I recently did a brush up course on Networking/Protocols 101’s. Making my notes public. Networking Basics / Protocols: Mental model to think about all protocols: A few notes about different Protocols: Network layer protocol: Transport layer protocol: TCP: UDP: Other Protocols: HTTP: SMTP: XMPP: MQTT: AWS Networking: Local Zone: Edge location: Understanding IPv4, IPv6 IPv4 IPv6 Classes IPv4 How to read CIDR noation: AWS VPC: Interacting with VPC: Internet Gateway (IGW) Subnet: Route table NACL: Networking Basics / Protocols: There are 7 layers of communications as defined in OSI (Open systems Interconnection) model ...