distributed system
Design of Fault-Tolerant Virtual Machines
How VMware designed fault-tolerant virtual machines using primary-backup replication, deterministic replay, and failure detection.
Read article Backend engineering · System design
Notes on building
reliable systems.
A software engineer who is enthusiastic about back-end engineering and system design. I love to write about the new concepts that I learn. I use this blog as personal technical notes.
distributed systemsdatabasesbackend engineering
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18 published notesLatest articles
distributed system
The Google File System - Case Study
A case study of Google File System architecture, including its master, chunkservers, consistency model, and fault-tolerance choices.
Read articleconcurrency
Pessimistic Concurrency Control - 2PL
How pessimistic concurrency control and two-phase locking coordinate database transactions while preserving correctness.
Read articleDatabases
Query Optimization
How database optimizers transform declarative SQL into efficient plans using heuristics, cost models, and search strategies.
Read articleDatabases
Query Execution - Joins
A practical tour of database join execution, including nested-loop, block nested-loop, index, sort-merge, and hash joins.
Read articlequery-execution
Query Execution - Aggregations
How database engines execute sorting, hashing, grouping, and aggregation operations efficiently when data exceeds available memory.
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