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TTuanhdotnettuanhnet.hashnode.devMay 6 · 12 min read

Techniques to Partition Data for Growth Without Breaking Query Simplicity

Source: Techniques to Partition Data for Growth Without Breaking Query Simplicity You don't realize how often "just one query" matters until you've got ten million rows, a dozen replicas, and a product manager who needs a dashboard to load in under...

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TTuanhdotnettuanhnet.hashnode.devMar 21 · 17 min read

Understanding What a Covering Index Really Is

Source: Understanding What a Covering Index Really Is 1. Why this topic matters more than people think When people first learn about indexing, they usually stop at a very simple idea: an index helps the database find rows faster. That statemen...

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TTuanhdotnettuanhnet.hashnode.devMar 16 · 10 min read

Methods to Use Text Indexes with SubDocuments in MongoDB and Spring Boot (Without Missing Matches)

Source: Methods to Use Text Indexes with SubDocuments in MongoDB and Spring Boot (Without Missing Matches) 1. The real problem I ran into with “search inside subdocuments” When people say “just add a text index and use $text”, it sounds like t...

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TTuanhdotnettuanhnet.hashnode.devFeb 21 · 15 min read

Design an Elasticsearch-Style Search Engine: How Does It Actually Work?

Source: Design an Elasticsearch-Style Search Engine: How Does It Actually Work? 1. Why “search” is not just a fancy SELECT … LIKE '%keyword%' Most teams first meet “search” the same way they meet gym memberships: with optimism, a free trial, a...

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TTuanhdotnettuanhnet.hashnode.devFeb 15 · 12 min read

How to Optimize Slow Queries the Index-First Way (Without Guessing)

Source: How to Optimize Slow Queries the Index-First Way (Without Guessing) 1. Why “index-first” is a mindset, not a magic button 1.1 What “slow” usually means in real systems In production, a query is rarely slow in isolation. It becomes...

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TTuanhdotnettuanhnet.hashnode.devFeb 14 · 10 min read

Reasons Too Many Indexes Make Writes Slower (And How to Fix It)

Source: Reasons Too Many Indexes Make Writes Slower (And How to Fix It) 1. The “invisible” bill you pay on every write When people talk about indexes, they usually picture faster reads: search results popping instantly, filters feeling snappy,...

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RRonronchang.hashnode.devJan 5 · 2 min read

資料庫優化：從規劃到實踐的全方位深度解析

1. 規劃階段：奠定高效能的架構基石在任何資料庫專案的初期，無論是新建系統、執行遷移，或是進行重大升級，審慎的架構規劃都是決定專案成敗的關鍵。此階段所做出的基礎性決策（foundational decisions）——例如核心資料結構的選型、索引策略的制定，以及主鍵的設計——將直接決定系統未來的擴展性、效能表現與長期維護成本。一個深思熟慮的開端，是打造一個穩健、高效數據系統的基石。 1.1 核心資料結構的選擇：B+ 樹的優越性現代資料庫系統，特別是處理交易型工作負載的系統，普遍選擇 B+ 樹...

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MKMateen Kianimilddev.hashnode.devAug 6, 2025 · 4 min read

Python Get Index of Item in List

Introduction Getting the position of an element in a Python list is a common task for any developer. Yet, many overlook how to handle cases where the item is missing or appears multiple times. Have you ever wondered what happens if you try to find an...

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MKMateen Kianimilddev.hashnode.devJul 22, 2025 · 3 min read

Find Index of Item in Python List

Find Index of Item in Python List Introduction Every developer knows that lists are a fundamental data structure in Python. They let you store, access, and manipulate items in order. But there's one small detail that often trips people up: finding wh...

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TTradeLinktradelinkplatform.hashnode.devJul 8, 2025 · 2 min read

Using the Fear and Greed Index to Decode Crypto Market Sentiment

In software and trading alike, decision-making benefits from good data—and in the crypto market, raw data isn’t always enough. Sentiment drives volatility. A tweet, a panic, or a parabolic rally can swing prices faster than most bots can react. That’...

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Search Hashnode

#index

Explore Hashnode

Trending tags this week

Techniques to Partition Data for Growth Without Breaking Query Simplicity

Understanding What a Covering Index Really Is

Methods to Use Text Indexes with SubDocuments in MongoDB and Spring Boot (Without Missing Matches)

Design an Elasticsearch-Style Search Engine: How Does It Actually Work?

How to Optimize Slow Queries the Index-First Way (Without Guessing)

Reasons Too Many Indexes Make Writes Slower (And How to Fix It)

資料庫優化：從規劃到實踐的全方位深度解析

Python Get Index of Item in List

Find Index of Item in Python List

Using the Fear and Greed Index to Decode Crypto Market Sentiment