Consistency and Replication

Classifications / Distributed Systems / Consistency and Replication

TRACK

Replication models, quorums, isolation, ordering, and large-scale coordination trade-offs.

65 lessons

LESSONS

1. 001
   CAP Theorem Revisited - The Fundamental Tradeoff

   30 min

   [TODO]
2. 002
   PACELC Framework & Split-Brain Prevention

   30 min

   [TODO]
3. 003
   Quorum Systems - The Mathematics of Agreement

   30 min

   [TODO]
4. 004
   Consistency Models Spectrum

   30 min

   [TODO]
5. 005
   Sloppy Quorums - Availability on Reachable Nodes

   30 min

   [TODO]
6. 006
   Hinted Handoff - Returning Temporary Replicas Home

   30 min

   [TODO]
7. 007
   Chain Replication - Strong Consistency Through Ordered Replication

   30 min

   [TODO]
8. 008
   Read Repair & Anti-Entropy - Healing Diverged Replicas

   30 min

   [TODO]
9. 009
   Concurrency Control Fundamentals: Locks, Latches, and Deadlocks

   30 min

   [TODO]
10. 010
    Optimistic Concurrency and Timestamp Ordering

    30 min

    [TODO]
11. 011
    Database Replication Topologies and Failover Behavior

    30 min

    [TODO]
12. 012
    MVCC Internals: Snapshot Reads and Write Visibility

    30 min

    [TODO]
13. 013
    Transaction Isolation Levels and Anomaly Prevention

    30 min

    [TODO]
14. 014
    Sharding Strategies and Rebalancing in Production

    30 min

    [TODO]
15. 015
    Distributed Transactions: 2PC, Sagas, and Practical Limits

    30 min

    [TODO]
16. 016
    Consistency Models: Strong, Causal, and Eventual Guarantees

    30 min

    [TODO]
17. 017
    Monthly Capstone: Design a Globally Distributed Data Layer CAPSTONE

    30 min

    [TODO]
18. 018
    Replication Primitives: Log Shipping and Apply

    30 min

    [TODO]
19. 019
    Synchronous vs Asynchronous Replication

    30 min

    [TODO]
20. 020
    Raft for Database Replication

    30 min

    [TODO]
21. 021
    Quorum Reads/Writes and Tunable Consistency

    30 min

    [TODO]
22. 022
    Sharding Strategies: Range, Hash, and Hybrid

    30 min

    [TODO]
23. 023
    Rebalancing and Consistent Hashing

    30 min

    [TODO]
24. 024
    Distributed Transactions and Two-Phase Commit

    30 min

    [TODO]
25. 025
    Sagas and Outbox for Cross-Service Consistency

    30 min

    [TODO]
26. 026
    Change Data Capture from WAL Streams

    30 min

    [TODO]
27. 027
    Materialized Views and Incremental Maintenance

    30 min

    [TODO]
28. 028
    Read Replicas, Lag, and Read-Your-Writes

    30 min

    [TODO]
29. 029
    Global Secondary Indexes Across Shards

    30 min

    [TODO]
30. 030
    Backup, Snapshots, and Point-in-Time Recovery

    30 min

    [TODO]
31. 031
    Storage Engine Observability and SLOs

    30 min

    [TODO]
32. 032
    Failure Testing and Jepsen-Style Validation

    30 min

    [TODO]
33. 033
    Monthly Capstone: Geo-Distributed Database Service CAPSTONE

    30 min

    [TODO]
34. 034
    Cluster Metadata Services and Control Plane State

    30 min

    [TODO]
35. 035
    Leader Election Timelines and Failover Path

    30 min

    [TODO]
36. 036
    Clock Uncertainty, Leases, and Safe Reads

    30 min

    [TODO]
37. 037
    Replication Flow Control and Backpressure

    30 min

    [TODO]
38. 038
    Read Repair and Anti-Entropy Basics

    30 min

    [TODO]
39. 039
    Merkle Trees for Replica Divergence Detection

    30 min

    [TODO]
40. 040
    Failure Detectors and Membership Changes

    30 min

    [TODO]
41. 041
    Raft Log Compaction and Snapshot Installation

    30 min

    [TODO]
42. 042
    Replication Topologies and Failure Domains

    30 min

    [TODO]
43. 043
    Leader-Based Replication Mechanics

    30 min

    [TODO]
44. 044
    Multi-Leader Replication and Conflict Classes

    30 min

    [TODO]
45. 045
    Leaderless Replication and Quorum Math

    30 min

    [TODO]
46. 046
    Replication Lag Budgets and Read Staleness

    30 min

    [TODO]
47. 047
    Conflict Resolution Policies in Distributed Stores

    30 min

    [TODO]
48. 048
    Consistency Spectrum and API Semantics

    30 min

    [TODO]
49. 049
    Partitioning Fundamentals and Shard Keys

    30 min

    [TODO]
50. 050
    Rebalancing Partitions under Live Traffic

    30 min

    [TODO]
51. 051
    Module Capstone: Replication + Partitioning Plan CAPSTONE

    30 min

    [TODO]
52. 052
    Transaction Semantics in Data-Intensive Systems

    30 min

    [TODO]
53. 053
    Snapshot Isolation and Anomaly Boundaries

    30 min

    [TODO]
54. 054
    Serializable Techniques in Practice

    30 min

    [TODO]
55. 055
    Distributed Transactions and 2PC Limits

    30 min

    [TODO]
56. 056
    Consensus Problem and Fault Models

    30 min

    [TODO]
57. 057
    Raft/Paxos Mental Model for Engineers

    30 min

    [TODO]
58. 058
    Linearizability vs Serializability

    30 min

    [TODO]
59. 059
    Time, Clocks, and Global Ordering

    30 min

    [TODO]
60. 060
    Idempotency and Retry-Safe APIs

    30 min

    [TODO]
61. 061
    Exactly-Once Delivery Myths

    30 min

    [TODO]
62. 062
    Backpressure and Flow Control

    30 min

    [TODO]
63. 063
    Change Data Capture as Integration Backbone CAPSTONE

    30 min

    [TODO]
64. 064
    Event Logs, Projections, and Stream Tables

    30 min

    [TODO]
65. 065
    Module Capstone: Consistency and Coordination Design CAPSTONE

    30 min

    [TODO]

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