Everything About ___
Live briefing

Everything about Two-phase locking

Concurrency control method

In databases and transaction processing, two-phase locking (2PL) is a pessimistic concurrency control method that guarantees conflict-serializability. It is also the name of the resulting set of database transaction schedules (histories). The protocol uses locks, applied by a transaction to data, which may block other transactions from accessing the same data during the transaction's life. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Two-phase lockingA 5-minute orientation
  2. Skim a recent paper: Tunable two-dimensional laser arrays with zero-phase lockingInfluential work since 2022
  3. Pick up a classic book: Lock-in amplifiersThe most-reprinted book on the subject
  4. Read the landmark paper: Two-phase locking performance and its thrashing behaviorCited 54 times
  5. Go sideways: Commitment orderingA closely related topic
  6. Go sideways: Concurrency controlA closely related topic

📖 Definitions

No dictionary entry for this exact phrase.

🗂️ The subject at a glance

  1. Read and write locks
  2. Variants

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics