Comparison of SDK features
This section allows you to compare the capabilities of the YDB SDK, which are implemented for different programming languages.
| Feature | C++ | Python | Go | Java | NodeJS | C# | Rust | PHP |
|---|---|---|---|---|---|---|---|---|
| SSL/TLS support (system certificates) | ||||||||
| SSL/TLS support (custom certificates) | ||||||||
| Configure/enable GRPC KeepAlive (keeping the connection alive in the background) | ||||||||
| Regular SLO testing on the latest code version | ||||||||
| Issue templates on GitHub | ||||||||
| Client-side balancing | ||||||||
| Load balancer initialization through Discovery/ListEndpoints | ||||||||
| Disable client-side load balancing (all requests to the initial Endpoint) | ||||||||
| Background Discovery/ListEndpoints (by default, once a minute) | ||||||||
| Support for multiple IP addresses in the initial Endpoint DNS record, Endpoint DNS record, some of which may not be available (DNS load balancing) | ||||||||
| Connection pessimization on transport errors | ||||||||
| Forced Discovery/ListEndpoints if more than half of the nodes are pessimized | ||||||||
| Automatic detection of the nearest DC/availability zone by TCP pings | ||||||||
| Automatic detection of the nearest DC/availability zone by Discovery/ListEndpoints response | ||||||||
| Uniform random selection of nodes (default) | ||||||||
| Load balancing across all nodes of all DCs (default) | ||||||||
| Load balancing across all nodes of a particular DC/availability zone (for example, “a”, “vla”) | ||||||||
| Load balancing across all nodes of all local DCs | ||||||||
| Credentials providers | ||||||||
| Anonymous (default) | ||||||||
| Static (user - password) | ||||||||
| Token: IAM, Access token | ||||||||
| Service account (Yandex.Cloud specific) | ||||||||
| Metadata (Yandex.Cloud specific) | ||||||||
| Working with Table service sessions | ||||||||
| Session pool | ||||||||
| Limit the number of concurrent sessions on the client | ||||||||
| Minimum number of sessions in the pool | ||||||||
| Warm up the pool to the specified number of sessions when the pool is created | ||||||||
| Background KeepAlive for idle sessions in the pool | ||||||||
| Background closing of idle sessions in the pool (redundant sessions) | ||||||||
| Automatic dumping of a session from the pool in case of BAD_SESSION/SESSION_BUSY errors | ||||||||
| Storage of sessions for possible future reuse | ||||||||
| Retryer on the session pool (a repeat object is a session) | ||||||||
| Retryer on the session pool (a repeat object is a transaction within a session) | ||||||||
| Graceful session shutdown support ("session-close" in "x-ydb-server-hints" metadata means to "forget" a session and not use it again) | ||||||||
| Support for server-side load balancing of sessions (a CreateSession request must contain the "session-balancer" value in the "x-ydb-client-capabilities" metadata header) | ||||||||
| Support for YDB data types | ||||||||
| Int/Uint(8,16,32,64) | ||||||||
| Int128, UInt128 | ||||||||
| Float, Double | ||||||||
| Bool | ||||||||
| String, Bytes | ||||||||
| Utf8, Text | ||||||||
| NULL, Optional, Void | ||||||||
| Struct | ||||||||
| List | ||||||||
| Set | ||||||||
| Tuple | ||||||||
| Variant<Struct>,Variant<Tuple> | ||||||||
| Date, DateTime, Timestamp, Interval | ||||||||
| TzDate, TzDateTime, TzTimestamp | ||||||||
| DyNumber | ||||||||
| Decimal (120 bits) | ||||||||
| Json, JsonDocument, Yson | ||||||||
| Query service client | ||||||||
| * CreateSession | ||||||||
| * DeleteSession | ||||||||
| * AttachSession | ||||||||
| * CommitTransaction | ||||||||
| * BeginTransaction | ||||||||
| * RollbackTransaction | ||||||||
| * ExecuteQuery | ||||||||
| * ExecuteScript | ||||||||
| * FetchScriptResults | ||||||||
| Scheme service client | ||||||||
| MakeDirectory | ||||||||
| RemoveDirectory | ||||||||
| ListDirectory | ||||||||
| ModifyPermissions | ||||||||
| DescribePath | ||||||||
| Table service client | ||||||||
| CreateSession | ||||||||
| DeleteSession | ||||||||
| KeepAlive | ||||||||
| CreateTable | ||||||||
| DropTable | ||||||||
| AlterTable | ||||||||
| CopyTable | ||||||||
| CopyTables | ||||||||
| DescribeTable | ||||||||
| ExplainDataQuery | ||||||||
| PrepareDataQuery | ||||||||
| ExecuteDataQuery | ||||||||
| * By default, server cache for all parameter requests (KeepInCache) | ||||||||
| * A separate option to enable/disable server cache for a specific request | ||||||||
| * Truncated result as an error (by default) | ||||||||
| * Truncated result as an error (as an opt-in opt-out option) | ||||||||
| ExecuteSchemeQuery | ||||||||
| BeginTransaction | ||||||||
| CommitTransaction | ||||||||
| RollbackTransaction | ||||||||
| DescribeTableOptions | ||||||||
| StreamExecuteScanQuery | ||||||||
| StreamReadTable | ||||||||
| BulkUpsert | ||||||||
| Operation service client | ||||||||
| Consumed Units from metadata of a response to a grpc-request request (for the user to obtain this) | ||||||||
| Obtaining OperationId of the operation for a long-polling status of operation execution | ||||||||
| ScriptingYQL service client | ||||||||
| ExecuteYql | ||||||||
| ExplainYql | ||||||||
| StreamExecuteYql | ||||||||
| Coordination service client | ||||||||
| CreateNode | ||||||||
| AlterNode | ||||||||
| DropNode | ||||||||
| DescribeNode | ||||||||
| Session (leader election, distributed lock) | ||||||||
| Topic service client | ||||||||
| CreateTopic | ||||||||
| DescribeTopic | ||||||||
| AlterTopic | ||||||||
| DropTopic | ||||||||
| StreamWrite | ||||||||
| StreamRead | ||||||||
| Ratelimiter service client | ||||||||
| CreateResource | ||||||||
| AlterResource | ||||||||
| DropResource | ||||||||
| ListResources | ||||||||
| DescribeResource | ||||||||
| AcquireResource | ||||||||
| Monitoring (sending SDK metrics to the monitoring system) | ||||||||
| Solomon / Monitoring | ||||||||
| Prometheus | ||||||||
| SDK event logging | ||||||||
| SDK event tracing | ||||||||
| in OpenTelemetry | ||||||||
| in OpenTracing | ||||||||
| Examples | ||||||||
| Auth | ||||||||
| * token | ||||||||
| * anonymous | ||||||||
| * environ | ||||||||
| * metadata | ||||||||
| * service_account | ||||||||
| * static (username + password) | ||||||||
| Basic (series) | ||||||||
| Bulk Upsert | ||||||||
| Containers (Struct, Variant, List, Tuple) | ||||||||
| Pagination | ||||||||
| Partition policies | ||||||||
| Read table | ||||||||
| Secondary index Workaround | ||||||||
| Secondary index builtin | ||||||||
| TTL | ||||||||
| TTL Readtable | ||||||||
| URL Shortener (serverless yandex function) | ||||||||
| Topic reader | ||||||||
| Topic writer |
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