@itsalexzajac.bsky.social
The most dangerous engineer isn't the 10x engineer.
November 23, 2025 at 4:33 PM
The most dangerous engineer isn't the 10x engineer.
3 mistakes when trying to mentor junior engineers:
November 22, 2025 at 4:33 PM
3 mistakes when trying to mentor junior engineers:
anyone still using PHP?
November 21, 2025 at 4:28 PM
anyone still using PHP?
Vector databases are very solving yesterday's problem:
November 20, 2025 at 4:30 PM
Vector databases are very solving yesterday's problem:
I've shipped 100+ PRs at Amazon.
My take on code quality vs. code speed:
My take on code quality vs. code speed:
November 19, 2025 at 4:28 PM
I've shipped 100+ PRs at Amazon.
My take on code quality vs. code speed:
My take on code quality vs. code speed:
Who else absolutely loves LeetCode challenges?
November 18, 2025 at 4:29 PM
Who else absolutely loves LeetCode challenges?
You are what you eat.
10 brain foods to grow as an engineer:
10 brain foods to grow as an engineer:
November 17, 2025 at 4:29 PM
You are what you eat.
10 brain foods to grow as an engineer:
10 brain foods to grow as an engineer:
I wasted 3 years waiting for the "right time" to ship:
November 16, 2025 at 4:27 PM
I wasted 3 years waiting for the "right time" to ship:
Managed cloud or self-hosted?
November 15, 2025 at 4:26 PM
Managed cloud or self-hosted?
he was actually trying to send us a message
November 14, 2025 at 4:34 PM
he was actually trying to send us a message
PowerPoint is the worst form of technical debt in 2025.
November 13, 2025 at 4:32 PM
PowerPoint is the worst form of technical debt in 2025.
Give me 60 seconds, and I'll teach you how Cursor works:
November 12, 2025 at 11:30 PM
Give me 60 seconds, and I'll teach you how Cursor works:
Code is read more often than it is written.
8 patterns to improve code readability:
8 patterns to improve code readability:
November 11, 2025 at 4:32 PM
Code is read more often than it is written.
8 patterns to improve code readability:
8 patterns to improve code readability:
You are what you eat.
10 brain foods to grow as an engineer:
10 brain foods to grow as an engineer:
November 10, 2025 at 4:31 PM
You are what you eat.
10 brain foods to grow as an engineer:
10 brain foods to grow as an engineer:
Good code explains itself.
Bad code needs comments:
Bad code needs comments:
November 9, 2025 at 4:31 PM
Good code explains itself.
Bad code needs comments:
Bad code needs comments:
I've been coding for 5 years.
And I've met every one of these "superheroes."
And I've met every one of these "superheroes."
November 8, 2025 at 4:28 PM
I've been coding for 5 years.
And I've met every one of these "superheroes."
And I've met every one of these "superheroes."
can't believe this sorting algorithm is O(n)
November 7, 2025 at 4:28 PM
can't believe this sorting algorithm is O(n)
𝟴. 𝗗𝘆𝗻𝗮𝗺𝗼𝗗𝗕:
Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It's a fully managed, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications.
Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It's a fully managed, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications.
November 6, 2025 at 4:33 PM
𝟴. 𝗗𝘆𝗻𝗮𝗺𝗼𝗗𝗕:
Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It's a fully managed, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications.
Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It's a fully managed, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications.
𝟳. 𝗟𝗮𝗺𝗯𝗱𝗮:
AWS Lambda lets you run code for virtually any type of application or backend service with zero administration. Just upload your code, and Lambda takes care of everything required to run and scale your code with high availability.
AWS Lambda lets you run code for virtually any type of application or backend service with zero administration. Just upload your code, and Lambda takes care of everything required to run and scale your code with high availability.
November 6, 2025 at 4:33 PM
𝟳. 𝗟𝗮𝗺𝗯𝗱𝗮:
AWS Lambda lets you run code for virtually any type of application or backend service with zero administration. Just upload your code, and Lambda takes care of everything required to run and scale your code with high availability.
AWS Lambda lets you run code for virtually any type of application or backend service with zero administration. Just upload your code, and Lambda takes care of everything required to run and scale your code with high availability.
𝟲. 𝗥𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗥𝗗𝗦):
RDS makes it easier to scale a relational database in the cloud. It provides cost-friendly and resizable capacity while automating time-consuming admin tasks such as hardware provisioning, database setup, and more
RDS makes it easier to scale a relational database in the cloud. It provides cost-friendly and resizable capacity while automating time-consuming admin tasks such as hardware provisioning, database setup, and more
November 6, 2025 at 4:33 PM
𝟲. 𝗥𝗲𝗹𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗥𝗗𝗦):
RDS makes it easier to scale a relational database in the cloud. It provides cost-friendly and resizable capacity while automating time-consuming admin tasks such as hardware provisioning, database setup, and more
RDS makes it easier to scale a relational database in the cloud. It provides cost-friendly and resizable capacity while automating time-consuming admin tasks such as hardware provisioning, database setup, and more
𝟰. 𝗦𝗶𝗺𝗽𝗹𝗲 𝗡𝗼𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗦𝗡𝗦):
SNS is a managed service that delivers messages from publishers to subscribers. It supports push notifications for mobile and enterprise applications.
SNS is a managed service that delivers messages from publishers to subscribers. It supports push notifications for mobile and enterprise applications.
November 6, 2025 at 4:33 PM
𝟰. 𝗦𝗶𝗺𝗽𝗹𝗲 𝗡𝗼𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗦𝗡𝗦):
SNS is a managed service that delivers messages from publishers to subscribers. It supports push notifications for mobile and enterprise applications.
SNS is a managed service that delivers messages from publishers to subscribers. It supports push notifications for mobile and enterprise applications.
𝟯. 𝗘𝗹𝗮𝘀𝘁𝗶𝗰 𝗕𝗲𝗮𝗻𝘀𝘁𝗮𝗹𝗸:
This service provides automated deployment and provisioning of resources like virtual server instances, databases, and software stacks.
This service provides automated deployment and provisioning of resources like virtual server instances, databases, and software stacks.
November 6, 2025 at 4:33 PM
𝟯. 𝗘𝗹𝗮𝘀𝘁𝗶𝗰 𝗕𝗲𝗮𝗻𝘀𝘁𝗮𝗹𝗸:
This service provides automated deployment and provisioning of resources like virtual server instances, databases, and software stacks.
This service provides automated deployment and provisioning of resources like virtual server instances, databases, and software stacks.
𝟮. 𝗘𝗹𝗮𝘀𝘁𝗶𝗰 𝗖𝗼𝗺𝗽𝘂𝘁𝗲 𝗖𝗹𝗼𝘂𝗱 (𝗘𝗖𝟮):
EC2 provides scalable computing capacity in the cloud, allowing users to use virtual machines of varied configurations as per their requirements.
EC2 provides scalable computing capacity in the cloud, allowing users to use virtual machines of varied configurations as per their requirements.
November 6, 2025 at 4:33 PM
𝟮. 𝗘𝗹𝗮𝘀𝘁𝗶𝗰 𝗖𝗼𝗺𝗽𝘂𝘁𝗲 𝗖𝗹𝗼𝘂𝗱 (𝗘𝗖𝟮):
EC2 provides scalable computing capacity in the cloud, allowing users to use virtual machines of varied configurations as per their requirements.
EC2 provides scalable computing capacity in the cloud, allowing users to use virtual machines of varied configurations as per their requirements.
𝟭. 𝗦𝗶𝗺𝗽𝗹𝗲 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗦𝟯):
Amazon S3 offers scalable object storage for data backup, collection, and analytics. An ideal place to store non-relational data.
Amazon S3 offers scalable object storage for data backup, collection, and analytics. An ideal place to store non-relational data.
November 6, 2025 at 4:33 PM
𝟭. 𝗦𝗶𝗺𝗽𝗹𝗲 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 𝗦𝗲𝗿𝘃𝗶𝗰𝗲 (𝗦𝟯):
Amazon S3 offers scalable object storage for data backup, collection, and analytics. An ideal place to store non-relational data.
Amazon S3 offers scalable object storage for data backup, collection, and analytics. An ideal place to store non-relational data.
Why can we spin up 1000 servers in 90 seconds, but scaling file storage still takes 3 days?
November 5, 2025 at 4:28 PM
Why can we spin up 1000 servers in 90 seconds, but scaling file storage still takes 3 days?