• Lucene's Inverted Index Is Not What You Think It Is
• Why Lucene Never Stores Document IDs the Way You Think
• Why Modern Databases Rely on LSM Trees
• Everyone Talks About B+ Trees, But Do You Know the Bw-Tree?
• InnoDB Doesn’t Use a Regular LRU Cache — Here’s Its Secret
• What You Should Know About B-Trees on Disk (But Probably Don't)
• Why does MySQL use B-Trees instead of Binary Trees?
• Why InnoDB Secondary Indexes Use the Primary Key as an Indirection?
• False Sharing: The Performance Bug You Didn't Know You Had
• RoaringBitmap: A Bitmap on Steroids
• The RAM You Didn't Know You Were Using: Page Cache Explained
• What makes Java Bitset so cool?
• Understand the Inner Mechanics of a Phonetic Spell-Check Algorithm
• Dive Deep Into ScheduledExecutorService’s Internals
• Defeat Cache Stampedes Through Probabilistic Cache Recompute Algorithm
• Lessons from Log4j's Internal Optimisations Techniques