TeselaDB
  • Guides
  • Blog
  • Compatibility
  • Pricing
DocumentationDownload
Get started
  • Introduction
  • Quick start with one node
  • Quick start with a local cluster
  • Quick start with Docker
  • Install on Linux
  • Install on macOS
  • Install with Docker
  • Connect with mongosh
  • Connect your application
Develop
Connect
  • Connection string and options
  • Node.js
  • Python
  • Java
  • Go
  • C# and .NET
  • Rust
  • PHP
  • Ruby
  • ODMs and ORMs
Data modeling
  • Documents and BSON
  • Schema validation
  • Embed or reference
  • Keys and hotspots
  • Modeling patterns
  • Anti-patterns
Write data
  • Insert
  • Update
  • Delete
  • Bulk writes
  • Write guarantees and retries
Read data
  • Query documents
  • Projection
  • Arrays and embedded documents
  • Sort and paginate
  • Cursors and time limits
  • Read guarantees
Aggregation
  • Aggregations
  • Group and accumulate
  • Join collections with $lookup
  • Window functions
  • Optimize a pipeline
Indexes
  • How TeselaDB chooses an index
  • Indexes
  • Multikey and wildcard indexes
  • Unique, partial and sparse indexes
  • TTL indexes
  • Geospatial indexes
  • Build indexes online
Transactions
  • Transactions
  • Isolation and anomalies
  • Retries and transient errors
  • Limits and long transactions
Change streams
  • Change streams
  • Resume with tokens
  • Filter events
Search
  • Search
  • Search indexes
  • Vector search
Special collections
  • Capped collections
  • Time series
  • Clustered collections
  • Views
Server-side JavaScript
  • Server-side JavaScript
Query performance
  • Read a plan with explain
  • Plan cache
  • Query profiler
  • Find slow queries
Deploy
  • Choose a topology
  • Hardware and OS requirements
  • Deploy with systemd
  • Deploy with Docker Compose
  • Zones and regions
  • Survival goals
  • Replica set mode
  • Sharding and zones
  • Several tenants in one cluster
  • Production checklist
Operate
  • Nodes
  • Drain and remove nodes
  • Split, merge and move ranges
  • Find hotspots
  • Backup and restore
  • Restore
  • Schedule backups
  • Upgrade without downtime
  • Change the configuration live
  • Monitoring
  • Key metrics to watch
  • Node logs
  • Disaster recovery
  • Troubleshoot the cluster
  • Troubleshoot performance
  • Troubleshoot connections
Security
  • Security overview
  • Authentication
  • X.509 certificates
  • Tokens and API keys
  • Users
  • Users and roles
  • TLS and certificates
  • Rotate certificates
  • Encryption at rest
  • Queryable Encryption
  • Auditing
  • Hardening checklist
Migrate
  • Plan a migration
  • From MongoDB
  • From MongoDB Atlas
  • Verify the migrated data
  • Adapt your application
  • Rollback plan
AI and integrations
  • MCP server
  • Choose the MCP tools
  • Connect Claude, Cursor and other agents
  • REST API first steps
  • Compatible tools
Concepts
  • Architecture
  • Ranges and replicas
  • Raft in every range
  • How a request travels
  • Hybrid clocks
  • LSM storage and MVCC
  • Consistency and isolation
  • Distributed transactions
  • Fault tolerance
  • Glossary
Reference
Compatibility
  • Compatibility with MongoDB
  • Aggregation commands
  • Query and write commands
  • Plan cache commands
  • Authentication commands
  • User commands
  • Role commands
  • Replication commands
  • Sharding commands
  • Session commands
  • Administration commands
  • Diagnostic commands
  • Auditing commands
  • Search index commands
  • Testing commands
  • Query operators
  • Projection operators
  • Update operators
  • Aggregation stages
  • Arithmetic expressions
  • Array expressions
  • Bitwise expressions
  • Comparison and conditional expressions
  • JavaScript expressions
  • Size expressions
  • Date expressions
  • Miscellaneous expressions
  • Object expressions
  • Set expressions
  • String expressions
  • Encrypted string expressions
  • Timestamp expressions
  • Trigonometry expressions
  • Type expressions
  • Vector similarity expressions
  • Accumulators
  • Window operators
  • MongoDB Search operators
  • MongoDB Search field types
  • Index types
  • Index options
  • Collection types
  • Authentication mechanisms
  • Built-in roles
  • Cluster parameters
  • Tools
  • Change stream events
  • Privilege actions
Differences with MongoDB
  • Differences with MongoDB
  • Consistent search indexes
  • teselaBuckets option on indexes
  • Local and available reads see only majority data
  • Own stages in explain
  • One snapshot per transaction
  • Deprecated features are not implemented
  • The oplog is readable as mongos too
  • Own cluster parameters
  • compact and autoCompact on any node
  • REST API and MCP server
  • Uniqueness across the cluster
  • Deterministic search scores
  • Deprecated features that are kept
  • Scores with collection-wide statistics
  • Several tenants in one cluster
  • configureFailPoint for driver tests
  • Cost-based planner
  • collation with strength 0
  • Load-balanced mode on the client port
  • Geometries touching the edge
  • Node names in some responses
  • Order of a find without sort
  • The MCP server starts read-only
  • The MCP aggregation tools do not write
  • No HTTP+SSE transport in MCP
  • Invalid analyzers are refused when the index is created
  • sizeOnDisk in listDatabases
  • Diagnostic commands with TeselaDB data
  • DSA certificates refused
  • Stable order of mechanisms and inherited roles
  • Negative wtimeout
  • Text that is not valid UTF-8
  • Unauthorized message cut without breaking characters
  • Authorization comes before validation
  • Field order of an upsert
  • No recordId
  • A $clusterTime ahead does not move the clock
  • $clusterTime is checked first
  • Error message of rotateCertificates
  • Encryption at rest without an Enterprise edition
  • Key order in unordered reads and ties
  • A wildcard index cannot be unique
  • Auditing hides nested values
  • Document named when an index build fails
  • A collection cannot be capped and clustered
  • transactionLifetimeLimitSeconds on a node presenting as mongos
  • Collection created inside a transaction
  • convertToCapped copies in _id order
  • Time-series buckets in rawData
  • Math functions on Decimal128
  • Field order of measurements
  • collStats counters on time series
  • FIPS mode without validation
  • The key file error does not show the key
  • Generated config collections cannot be written
  • Order of rejected plans
  • explain without the SBE plan
  • config.changelog with ranges
  • Repairs with the balancer stopped
  • Stems of new words with kStemming and stempel
  • $group output in a stable order
  • Chinese analysis with lucene.smartcn
  • validate without recordId
  • Profiler on any node
  • getDiagnosticData with node data
  • $listCatalog without table names
  • queryShapeHash
  • $queryStats
  • Spill counters
  • Ties and paging tokens of $search
  • scoreDetails
  • Text index without its own entries
  • Scores with scalar quantization
  • addShard
  • Queryable Encryption compaction statistics
  • Oplog generated from versions
  • Schema of list-connections in MCP
  • Stems of new words in Galician, Catalan and Armenian
  • Oplog of a collection created in a transaction
  • mergeAllChunksOnShard leaves out recent ranges
  • Document estimate when resharding
  • Type of chunk bounds
  • Creating or reading collections in the middle of a transaction
  • Uncertainty window conflict in a transaction
CLI
  • CLI
  • teseladb start
  • teseladb dev
  • teseladb mcp
  • teseladb admin nodes
  • teseladb admin metrics
  • teseladb admin ranges
  • teseladb admin range
  • teseladb admin node
  • teseladb admin backup
  • teseladb admin restore
  • teseladb admin config
  • teseladb admin tenant
  • teseladb admin apikey
  • teseladb admin topology
  • teseladb admin token
  • teseladb admin cert
REST API
  • REST API
  • Databases and collections
  • Queries
  • A document by its _id
  • Writes
  • Indexes
  • Change streams
  • Commands, cursors and transactions
  • API keys
MCP tools
  • MCP server tools
Tables
  • Configuration parameters
  • Cluster parameters
  • Ports
  • Metrics
  • Error codes
  • Limits
  • Built-in roles
  • Privilege actions
  • Change stream events
  • Authentication mechanisms
Releases
  • Release notes for 0.1.0
  • Versioning and support policy
  • Upgrade between versions
Technical advisories
  • Technical advisories
FAQ
  • General questions
  • Development questions
  • Operations questions
  • Licensing and pricing questions
  1. Documentation
  2. /
  3. Reference
  4. /
  5. Compatibility

Cluster parameters

Which part of Cluster parameters TeselaDB supports and which elements behave differently from MongoDB.

Elements

ElementStatusDifference
auditConfigYes
changeStreamOptionsYes
defaultMaxTimeMSYes

See also

  • Compatibility with MongoDB
  • All the differences with MongoDB
PreviousBuilt-in rolesNextTools

On this page

  • Elements
  • See also
TeselaDB

A distributed document database that speaks the MongoDB 9.0 protocol.

Product

  • Architecture
  • MongoDB compatibility
  • Performance
  • Pricing
  • Blog
  • Changelog
  • Downloads

Documentation

  • Quick start
  • Connect drivers
  • Guides
  • CLI reference
  • REST API
  • MCP server
  • Release notes

Company

  • Privacy
  • Terms
  • Security
  • Contact sales
© 2026 TeselaDB

MongoDB 9.0 compatible

English

Language