Series

Web Development

[Concurrency Control] Locking, MVCC, and Message Queue
1. Definition of Concurrency Control Concurrency Control is a technique used by database systems to allow multiple transactions to execute at the same time while maintaining data consistency and integrity, instead of executing transactions in sequenc...
May 27, 20239 min read4
[Concurrency Control] Why Do We Need Concurrency Control? - Schedule, Serializability, Recoverability
💡 Why Does CodeBLUE Project Need Concurrency Control? 🔗 Schedule & Conflict Serializability Transaction: A sequence of actions where patients A and B access the database. R (Read): Retrieve the value of available_beds from the Hospitals table. ...
May 27, 20234 min read5
[CI/CD] Using GitHub Actions + Docker for CI/CD
I apologize for the inconvenience. I will continue in English. 👾 What is CI/CD? CI/CD stands for Continuous Integration/Continuous Deployment. It is the practice of automating the entire process from application development to deployment to create a...
May 26, 20237 min read221
Accessing EC2 public IP address via the Subdomain
For resolving Same Origin Policy Error and 403 Cookie Header Error
May 16, 20233 min read7
[Sentry] Using Sentry for tracking error log
📌 What is Sentry? Sentry is an external monitoring and error logging service that helps identify and categorize errors in code. By using errorHandler in the code, you can identify specific error codes (e.g., 404, 500) as errors. You can view erro...
May 9, 20232 min read13
[Redis] How to Use Redis in Node.js
Redis What is Redis? Redis is a cache system and in-memory database that stores data in a key-value format. Since in-memory databases store all data in memory, they are much faster than retrieving data from a traditional DBMS. Redis utilizes a data s...
Apr 25, 20233 min read224

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