Getting Started

Guides

Adapters

Reference

Internal

RippleDB Architecture Purpose & Scope Package Structure & Dependency Rules Core Principles Core Data Model Sync Model Query Model & Invalidation Performance via Batching UI Integration (Optional)Comparisons & Out-of-Scope

Architecture Decision Records (ADRs)ADR-0001: Local Storage Is the Source of Truth ADR-0002: Replication Is Log-Based (Append-Only), Not State-Based ADR-0003: Field-Level LWW Using Hybrid Logical Clocks (HLC)ADR-0004: Deletes Are Modeled as Tombstones ADR-0005: Distinguish Row Queries from List Queries ADR-0006: Row Queries Are Invalidated Precisely by ID ADR-0007: List Queries Use Broad Invalidation and Rerun ADR-0008: Sorting Requires the Same Invalidation Strategy as Filtering ADR-0009: Performance Is Achieved via Batched Reads, Not Join-Based Reactivity ADR-0010: UI Cache Integration Is Optional and Decoupled ADR-0011: List Query Dependency Mapping Is Explicit (Registry-Based)ADR-0012: CRDTs Are Explicitly Out of Core Scope ADR-0013: Complexity Is Rejected in Favor of Predictability

Packages

ADR-0014: Monorepo Package Structure and Layering ADR-0015: Core Package Must Be Pure and Dependency-Minimal ADR-0016: store-* and db-* Packages Own Backend/Runtime Dependencies ADR-0017: UI Integrations Live in bind-* Packages ADR-0018: Package Names and Intended Responsibilities ADR-0019: Strict Dependency Graph Between Packages

InternalADRs

ADR-0004: Deletes Are Modeled as Tombstones

Deletes are conflict-resolvable fields (deleted + deleted_tag) rather than hard row removal.

Status

Accepted

Context

Concurrent delete/update scenarios can cause “resurrection” if deletes are treated as row removal.

Decision

Deletes are represented as tombstones:

deleted = true
deleted_tag = <hlc>

Deletes participate in LWW like any other field.

Alternatives Considered

Hard deletes
Server-only deletes
Per-row delete markers without tags

Consequences

Deletes are conflict-resolvable
Resurrection is prevented
Queries must filter on deleted
Cleanup/compaction is a future concern

ADR-0003: Field-Level LWW Using Hybrid Logical Clocks (HLC)

Resolve conflicts per-field using HLC tags rather than row-level LWW.

ADR-0005: Distinguish Row Queries from List Queries

Row queries and list queries have fundamentally different invalidation semantics.

On this page

Alternatives Considered