Storage and Retrieval (3) - Column-based storage engine
while the analytical requirement arise in large companies, the performance for aggregating large scale data gradually cannot be accepted by using row-based storage engine. Column-based storage engines were developed for optimizing analytical requirement. They have huge improvement while query large portion of data on few columns. In this article we will talk more about its core concept.
ReadStorage and Retrieval (2) - B Tree
B Tree is one of the most famous data structure of page-oriented storage engine (e.g. MySQL). page-oriented storage engine has relatively good read performance comparing to log-structured storage engine. Let's take a look at B Tree!
ReadStorage and Retrieval (1) - SSTable and LSM Tree
SSTable and LSM Tree are the underlying data structure of log structure storage engine (e.g. Cassandra). Log structure storage engine has relatively good write performance comparing to page oriented storage engine (e.g. B Tree, adopted by MySQL). Let's take a look at SSTable and LSM Tree !
Read希望我 20 歲就有的投資理財懶人包
這一陣子看了很多投資、理財學習資源（書、網站、影片），也為自己做了理財規劃，才發現自己原來這麼需要學會理財，也才知道原來投資要及早開始，時間才是資產成長的最大力量。深深覺得這些思維與知識，應該要是人人都能懂、都能取得，因此決定寫這篇文章，把最精華的部分濃縮起來。內容將主要包含三大部分：基礎理財、保險以及長期投資。
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