Bluetooth Low Energy Heart Rate Service Profile and Service Analysis
Introduction
Bluetooth Low Energy (BLE) provides a standardized Heart Rate Service, designed for fitness applications to transmit heart rate data from a sensor device to a collector, such as a smartphone or smartwatch. This service is defined by two primary documents: the Heart Rate Profile and the Heart Rate Service specification. The Profile ...
Posted on Mon, 24 Aug 2026 16:52:06 +0000 by smokinjoe
Distributed Unique ID Generation: A Practical Guide
Understanding Distributed Unique Identifiers
In distributed systems, generating globally unique identifiers is a common requirement. These IDs typically serve as unique markers for data records in search functionality and storage systems. Use cases include unique order numbers, coupon codes, and similar scenarios where duplication would constit ...
Posted on Sat, 22 Aug 2026 16:07:02 +0000 by dagon
Generating 12-Character Random Identifiers from Java UUIDs
Standard Universally Unique Identifiers (UUIDs) produced by Java typically generate a 36-character string containing hexadecimal digits and hyphens. Often, shorter identifiers are required for specific application contexts. The following procedure outlines how to derive a 12-character string from a standard UUID object.
Process Overview
The tra ...
Posted on Sun, 10 May 2026 20:18:22 +0000 by mansuang
Using UUIDv7 as Database Primary Keys
A persistent misconception in software engineering is that universally unique identifiers (UUIDs) are inherently unsuitable for database primary keys. The rationale stems from the fact that standard random UUIDs cause index fragmentation and frequent B-tree page splits during inserts due to their lack of sequential ordering.UUID SpecificationsD ...
Posted on Sat, 09 May 2026 17:42:27 +0000 by akelavlk