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356ca32994
This commit increases the node size limit from 256 to 4096 CPUs based onbe1f566488Fixes SCYLLADB-1676 Closes scylladb/scylladb#29602 (cherry picked from commita7b7019f90) Closes scylladb/scylladb#29846 Closes scylladb/scylladb#29864
75 lines
1.8 KiB
ReStructuredText
75 lines
1.8 KiB
ReStructuredText
==============
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Limits
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==============
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This document provides hard and soft limits in ScyllaDB.
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Cluster and Node Limits
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-----------------------------
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.. list-table::
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:widths: 50 50
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:header-rows: 1
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* - Component
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- Limit
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* - Nodes per cluster
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- Low hundreds
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* - Node size
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- 4096 CPUs
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See :ref:`Hardware Requirements <system-requirements-hardware>` for storage
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and memory requirements and limits.
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CQL Limits
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--------------
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.. list-table::
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:widths: 50 50
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:header-rows: 1
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* - Component
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- Limit
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* - Keyspaces per cluster
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- Thousands (tested with 1000)
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* - Tables per keyspace
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- Low thousands (tested with 5000)
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* - Tables per cluster (including indexes)
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- Thousands
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* - Tables with CDC enabled
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- No limit. CDC can be enabled for all tables in a cluster.
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* - Materialized views and secondary indexes per table
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- Low tens
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* - Columns per table
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- Hundreds
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* - Columns per cluster
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- Tens of thousands
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* - Partition size
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- Gigabytes
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* - Rows per partition
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- No limit
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* - Row size
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- Latency-related soft limit:
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Hundreds of kilobytes (good latency) or megabytes (mediocre latency)
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* - Key length
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- 65533
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* - Keyspace / Table / View / Index name length
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- 192 characters
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* - Query parameters in a query
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- 65535 (2^16-1)
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* - Statements in a batch
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- 65535 (2^16-1)
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* - Fields in a tuple
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- 32768 (2^15) (just a few fields, such as 2-10, are recommended)
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* - Collection (List)
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- ~2 billion (2^31)
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* - Collection (Set)
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- ~2 billion (2^31)
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* - Collection (Map)
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- Number of keys: 65535 (2^16-1)
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* - Blob size
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- 2 GB ( less than 1 MB is recommended)
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* - Dimension of a vector
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- 16000 (according to OpenSearch limitations)
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