For the first couple of years, my Sonos system was everything I’d hoped for. Seamless streaming, reliable connections, and that “it just works” experience that makes premium audio equipment worth the investment. My Sonos Five sat proudly in my living room, connected via Ethernet, delivering crystal-clear sound whenever I wanted it. Life was good. Then … Read more
Diagnosing Amazon Device Wi-Fi Failures on ASUS Router (Merlin Firmware) I ran into a persistent issue where my Amazon Echo Spot and Kindle refused to connect to my home Wi-Fi network, despite other devices working fine. The Echo would complete setup via my phone’s hotspot, but fail when switching to my router. The Kindle showed … Read more
I’ve been using my Sonos Five for a few years now, and I must admit when it works it’s fantastic, however I’ve had a number of issues with this system, mainly connectivity. Here are some of the things to help you debug those issues. Common Sonos Diagnostic Endpoints Endpoint Description http://<your_ip>:1400/status General device status: uptime, … Read more
Let’s dive into Python DataFrames! The go-to library for DataFrames in Python is Pandas. It’s incredibly powerful and widely used for data manipulation and analysis. This tutorial will cover: Let’s get started! 1. What is a Pandas DataFrame? Think of a Pandas DataFrame as a table or spreadsheet. It’s a two-dimensional, size-mutable, and potentially heterogeneous tabular data … Read more
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I have written this pice of code to let me know when there is a new firmware upgrade of my router. This should work on most of the ASUS Routers. I’ve tested only on RT-AX86U. I’ve scheduled this from my PC to run once a day. I’m using Pushover to get the notifications on my … Read more
DynamoDB, as a NoSQL database, does not employ traditional locking mechanisms like row-level locking found in relational databases. Instead, it utilizes optimistic concurrency control to manage concurrent data access and ensure data consistency. Optimistic Concurrency Control (OCC) In optimistic concurrency control, DynamoDB assumes that concurrent updates to the same item are unlikely to conflict. It … Read more
There are four main types of joins in SQL: In addition to these four main types of joins, there are also a few other types of joins, such as: The type of join that you use will depend on the specific requirements of your query. For example, if you want to find all customers who … Read more
Optimistic and pessimistic locking are two different concurrency control mechanisms used in databases and multi-user systems to handle concurrent access to shared resources, such as database records, files, or data structures. Both mechanisms aim to prevent conflicts and maintain data consistency when multiple users or processes attempt to access and modify the same resource simultaneously. … Read more
In MySQL, a primary key is a unique identifier for each row in a table. It ensures that each record is uniquely identifiable and helps in enforcing data integrity. When you create a primary key on a column, MySQL automatically creates an index on that column to optimize the search and retrieval of data. Indexes … Read more