Files

Łukasz Paszkowski 2d3a40e023 permit_reader: Add a new state: preemptive_aborted

A permit gets into the preemptive_aborted state when:
- times out;
- gets rejected from execution due to high chance its execution would
  not finalize on time;

Being in this state means a permit was removed from the wait list,
its internal timer was canceled and semaphore's statistic
`total_reads_shed_due_to_overload` increased.

2026-01-28 14:20:01 +01:00

advanced_rpc_compression_negotiation.tla

utils: add advanced_rpc_compressor

2024-12-23 23:37:02 +01:00

advanced_rpc_compression.md

utils: correct misspellings

2025-01-02 16:47:57 +02:00

api_v2.md

docs: dev: correct a typo

2023-03-31 17:19:08 +03:00

audit.md

doc: Correct reference in dev/audit.md

2025-12-24 15:25:15 +02:00

backport.md

…

building.md

build: replace tools/java submodule with packaged cassandra-stress

2025-04-15 10:11:28 +03:00

cdc.md

docs/dev: update CDC dev docs for tablets

2025-09-17 14:47:13 +02:00

code-coverage.md

Fix typos

2025-02-11 00:17:43 +02:00

commitlog-file-format.md

docs: Add entry on commitlog file format v4

2024-09-03 16:38:28 +00:00

compaction_controller.md

docs: dev: write mathematical expressions in LaTeX

2023-03-29 15:07:14 +03:00

compilation-time-analysis.md

Fix typos

2025-02-11 00:17:43 +02:00

cql3-type-mapping.md

docs: fix minor typo in docs/dev/cql3-type-mapping.md

2025-07-01 22:19:07 +05:30

cql-extensions-internal.md

…

debugging.md

Fix typos

2025-02-11 00:17:43 +02:00

describe_schema.md

schema: add per-table tablet options

2025-02-06 08:55:51 +02:00

docker-hub.md

doc: fix the license information on DockerHub

2025-12-23 15:53:06 +02:00

file_encryption.md

docs: Add EAR docs

2025-01-09 10:40:47 +00:00

hinted_handoff_design.md

…

IDL.md

…

isolation.md

Fix typos

2025-02-13 01:54:08 +02:00

logging.md

…

lua-type-mapping.md

docs: add vector type documentation

2025-01-28 21:14:49 +01:00

maintainer.md

docs/dev/maintainer.md: clarify "Updating submodule references"

2024-09-05 13:57:32 +03:00

metrics.md

Fix typos

2025-02-11 00:17:43 +02:00

migrating-from-users-to-roles.md

…

modules.md

forward_service: rename to mapreduce_service

2024-07-03 19:29:47 +03:00

mvcc.md

…

object_storage.md

snapshot: keep per-sstable metadata in manifest.json

2026-01-22 09:42:52 +02:00

paged-queries.md

docs/paged-queries.md: update references to readers

2025-09-26 11:15:38 +03:00

parallel_aggregations.md

…

per-partition-rate-limit.md

…

protocol-extensions.md

transport/server: declare a new "CLIENT_OPTIONS" option as supported

2025-12-20 12:26:22 -05:00

protocols.md

vector_store_client: rename embedding into vs_vector

2025-09-18 08:45:46 +03:00

raft-in-scylla.md

raft: clean up the documentation

2024-12-05 13:44:11 +01:00

reader-concurrency-semaphore.md

permit_reader: Add a new state: preemptive_aborted

2026-01-28 14:20:01 +01:00

README.md

Add repository layout dev documentation

2025-06-25 13:58:05 +03:00

repair_based_node_ops.md

…

repository_layout.md

remove redis documentation

2025-08-20 17:53:23 +03:00

reverse-reads.md

reverse-reads.md: Drop legacy reverse format information

2024-08-13 10:07:12 +02:00

review-checklist.md

docs/dev: review-checklist.md: expand the guide for good commit log

2025-01-08 13:01:35 +02:00

row_cache.md

doc: Introduce docs/dev/mvcc.md

2023-01-27 19:15:39 +01:00

row_level_repair.md

Fix typos

2025-02-11 00:17:43 +02:00

rust.md

…

secondary_index.md

…

service_levels.md

docs/dev/service_levels: update docs to service levels on raft

2026-01-13 06:49:18 +02:00

size-based-load-balancing.md

docs: correct spelling errors in size based balancing docs

2026-01-16 17:41:57 +02:00

sstable-compression-dicts.md

docs/dev: add sstable-compression-dicts.md

2025-04-01 00:07:31 +02:00

sstable-scylla-format.md

Merge 'sstables: Reduce amount of I/O for clustering-key-bounded reads from large partitions' from Tomasz Grabiec

2024-10-28 21:13:23 +02:00

sstables-directory-structure.md

docs: document sstables quarantine subdirectory

2025-11-21 10:45:33 +02:00

system_keyspace.md

docs: add effective_capacity to system keyspace docs

2026-01-18 16:57:08 +01:00

system_schema_keyspace.md

schema_tables: Keep "replication" column backwards-compatible by expanding rack lists to numeric RF

2025-10-21 09:11:25 +03:00

task_manager.md

api: task_manager: do not unregister tasks on get_status

2025-01-27 11:23:45 +01:00

testing.md

docs: add directories excluded from test.py

2026-01-09 11:59:25 +01:00

timestamp-conflict-resolution.md

…

tombstone.md

treewide: fix spelling errors

2025-09-12 15:58:19 +03:00

topology-over-raft.md

doc: topology-over-raft.md: Fix diagram for replacing, tablet_draining is not engaged

2026-01-18 15:36:05 +01:00

tracing.md

Add table name to tracing in alternator

2025-11-21 09:33:40 +02:00

view-building-coordinator.md

docs/dev/view-building-coordinator: fix typos

2025-12-04 12:52:42 +01:00

virtual-tables.md

docs: virtual-tables: Fix instructions

2025-04-09 20:21:51 +02:00

README.md

Scylla developer documentation

This folder contains developer-oriented documentation concerning the ScyllaDB codebase. We also have a wiki, which contains additional developer-oriented documentation. There is currently no clear definition of what goes where, so when looking for something be sure to check both.

Seastar documentation can be found here.

User documentation can be found on docs.scylladb.com

For information on how to build Scylla and how to contribute visit HACKING.md and CONTRIBUTING.md.

Index

Module list and dependencies

Repository layout and short summary of components