CODEWITHSUNDEEP
google-cloud-platformgoogle-cloud-spanner
Miftah Fathudin
Miftah Fathudin

Reputation: 53

Cloud Spanner max number of DatabaseClient

Is there a maximum number of DatabaseClient that can be created for an instance of Google Cloud Spanner?

Will the number of DatabaseClient affect to the performance?

Upvotes: 0

Views: 322

Answers (1)

Mairbek Khadikov
Mairbek Khadikov

Reputation: 8099

DatabaseClients are cached, so for identical database ids Spanner#getDatabaseClient returns the same instance of DatabaseClient.

Internally DatabaseClient opens multiple gRPC channels and maintains the session pool. This is something that can be configured with SpannerOptions#setNumChannels and SpannerOptions#setSessionPoolOptions.

The default number of open channels is optimized for low latency requests and works well in most cases. If you are sending high latency requests increasing number of channels potentially can lead to better throughput.

Upvotes: 2

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