Podcast
Questions and Answers
What is the purpose of creating a Spanner instance?
What is the purpose of creating a Spanner instance?
- To manually stop and restart the instance
- To list, edit, or delete the instance
- To monitor and restart processes with zero downtime
- To allocate resources for Spanner databases (correct)
What are the two important choices included in instance creation?
What are the two important choices included in instance creation?
- Instance naming and database replication
- Instance configuration and compute capacity (correct)
- Monitoring and restarting processes
- Resource allocation and geographical placement
What does an instance configuration define?
What does an instance configuration define?
- Monitoring and restarting processes with zero downtime
- Resource allocation and storage capacity
- Geographic placement and replication of databases (correct)
- Manual stop and restart options
What does Spanner oversee as a fully managed database service?
What does Spanner oversee as a fully managed database service?
What does Spanner offer as a free trial instance for 90 days?
What does Spanner offer as a free trial instance for 90 days?
What is one thing that Spanner does not offer a way to do?
What is one thing that Spanner does not offer a way to do?
How can you configure an instance in Google Cloud?
How can you configure an instance in Google Cloud?
What does compute capacity define for an instance?
What does compute capacity define for an instance?
When creating an instance, what must you specify if the compute capacity is smaller than 1000 processing units?
When creating an instance, what must you specify if the compute capacity is smaller than 1000 processing units?
What is equivalent to 1000 processing units?
What is equivalent to 1000 processing units?
What determines where your data is stored for an instance in Google Cloud?
What determines where your data is stored for an instance in Google Cloud?
When specifying compute capacity, what measurement unit may be used if the capacity is larger than 1000 processing units?
When specifying compute capacity, what measurement unit may be used if the capacity is larger than 1000 processing units?
What does compute capacity define for an instance in Cloud Spanner?
What does compute capacity define for an instance in Cloud Spanner?
When creating an instance with compute capacity smaller than 1000 processing units, what must be used to specify the compute capacity?
When creating an instance with compute capacity smaller than 1000 processing units, what must be used to specify the compute capacity?
What happens when an instance has fewer than 1000 processing units in Cloud Spanner?
What happens when an instance has fewer than 1000 processing units in Cloud Spanner?
What is the equivalent of 1000 processing units in Cloud Spanner?
What is the equivalent of 1000 processing units in Cloud Spanner?
When specifying compute capacity on an instance in Cloud Spanner, what multiples can be used for processing units?
When specifying compute capacity on an instance in Cloud Spanner, what multiples can be used for processing units?
What should be used to specify larger quantities of compute capacity in Cloud Spanner once the number of processing units reaches 1000?
What should be used to specify larger quantities of compute capacity in Cloud Spanner once the number of processing units reaches 1000?
What is the basis for determining storage limits in Spanner?
What is the basis for determining storage limits in Spanner?
When might Spanner reject writes to a database?
When might Spanner reject writes to a database?
What does Spanner bill for in terms of instance storage?
What does Spanner bill for in terms of instance storage?
What is the effect of using instances with fewer than 1000 processing units for larger workloads?
What is the effect of using instances with fewer than 1000 processing units for larger workloads?
In what situation can you not decrease compute capacity in Spanner?
In what situation can you not decrease compute capacity in Spanner?
What happens when you increase the compute capacity of a Spanner instance?
What happens when you increase the compute capacity of a Spanner instance?
What does Spanner distribute across zones of one or more regions to provide high performance and availability?
What does Spanner distribute across zones of one or more regions to provide high performance and availability?
How can you adjust the compute capacity of a Spanner instance?
How can you adjust the compute capacity of a Spanner instance?
What does increasing compute capacity do to the server and storage resources in a Spanner instance?
What does increasing compute capacity do to the server and storage resources in a Spanner instance?
What should you monitor when removing compute capacity from a Spanner instance?
What should you monitor when removing compute capacity from a Spanner instance?
What is one thing that Spanner does not have?
What is one thing that Spanner does not have?
What determines the peak read and write throughput values that a given amount of compute capacity can provide?
What determines the peak read and write throughput values that a given amount of compute capacity can provide?
What defines the geographic placement and replication of the databases in a Cloud Spanner instance?
What defines the geographic placement and replication of the databases in a Cloud Spanner instance?
What determines the location where data is stored for a Cloud Spanner instance?
What determines the location where data is stored for a Cloud Spanner instance?
What type of instance configuration spans more than one Google Cloud region?
What type of instance configuration spans more than one Google Cloud region?
What is NOT allowed to be changed for base instance configurations in Cloud Spanner?
What is NOT allowed to be changed for base instance configurations in Cloud Spanner?
What is used to specify larger quantities of compute capacity in Cloud Spanner once the number of processing units reaches 1000?
What is used to specify larger quantities of compute capacity in Cloud Spanner once the number of processing units reaches 1000?
Where are Google Cloud services available for use with Cloud Spanner?
Where are Google Cloud services available for use with Cloud Spanner?
What is the purpose of the leader region in a multi-region Spanner instance?
What is the purpose of the leader region in a multi-region Spanner instance?
What is the main role of read-only replicas in a multi-region Spanner instance?
What is the main role of read-only replicas in a multi-region Spanner instance?
What is the function of witness regions in a Spanner instance?
What is the function of witness regions in a Spanner instance?
What is the impact of moving a Spanner instance to a different instance configuration?
What is the impact of moving a Spanner instance to a different instance configuration?
How does changing the default leader region in a multi-region Spanner instance affect application latency?
How does changing the default leader region in a multi-region Spanner instance affect application latency?
What is true about read-only replicas in Spanner instances?
What is true about read-only replicas in Spanner instances?
When is the witness region important in a Spanner instance?
When is the witness region important in a Spanner instance?
What is one of the benefits of using read-only replicas in a Spanner instance?
What is one of the benefits of using read-only replicas in a Spanner instance?
What is true about moving a Spanner instance between regional and multi-region configurations?
What is true about moving a Spanner instance between regional and multi-region configurations?
What effect does configuring the default leader region have on database writes and application latency?
What effect does configuring the default leader region have on database writes and application latency?
What is the purpose of choosing a regional instance configuration for your users and services?
What is the purpose of choosing a regional instance configuration for your users and services?
What is the benefit of adding optional read-only replicas to a custom regional instance configuration?
What is the benefit of adding optional read-only replicas to a custom regional instance configuration?
What is the primary benefit offered by multi-region instances?
What is the primary benefit offered by multi-region instances?
What is the role of witness replicas in a multi-region configuration?
What is the role of witness replicas in a multi-region configuration?
What do read-write regions in a multi-region configuration contain?
What do read-write regions in a multi-region configuration contain?
What is the purpose of designating a default leader region in a multi-region configuration?
What is the purpose of designating a default leader region in a multi-region configuration?
What factors enable fast writes in a multi-region configuration?
What factors enable fast writes in a multi-region configuration?
What do additional voting replicas in the second read-write region of a multi-region configuration enable?
What do additional voting replicas in the second read-write region of a multi-region configuration enable?
What role do witness regions play in a multi-region instance configuration?
What role do witness regions play in a multi-region instance configuration?
What is the significance of forming a write quorum in Spanner regional configurations?
What is the significance of forming a write quorum in Spanner regional configurations?
Why might a multi-region configuration not be optimal in certain situations?
Why might a multi-region configuration not be optimal in certain situations?
What must be taken into consideration when creating a custom multi-region instance configuration with optional read-only replicas?
What must be taken into consideration when creating a custom multi-region instance configuration with optional read-only replicas?
What does Cloud Spanner use to replicate data at the byte level?
What does Cloud Spanner use to replicate data at the byte level?
In Cloud Spanner, what is the high-level organization unit for data replication?
In Cloud Spanner, what is the high-level organization unit for data replication?
What type of replication scheme does Cloud Spanner use for voting on write requests?
What type of replication scheme does Cloud Spanner use for voting on write requests?
What is the main purpose of creating replicas of each database split in Cloud Spanner?
What is the main purpose of creating replicas of each database split in Cloud Spanner?
In a multi-region Spanner instance, what role do witness regions play?
In a multi-region Spanner instance, what role do witness regions play?
What is the significance of using a synchronous replication scheme in Cloud Spanner?
What is the significance of using a synchronous replication scheme in Cloud Spanner?
What is the main responsibility of leader replicas in Google Cloud Spanner?
What is the main responsibility of leader replicas in Google Cloud Spanner?
What is the role of read-only replicas in a Spanner instance?
What is the role of read-only replicas in a Spanner instance?
What is a key benefit of using witness replicas in Spanner's multi-region configurations?
What is a key benefit of using witness replicas in Spanner's multi-region configurations?
What is the impact of adding read-only replicas to a custom instance configuration in a different continent than the leader region?
What is the impact of adding read-only replicas to a custom instance configuration in a different continent than the leader region?
In a Spanner instance, what is the role of non-witness replicas in the background during writes?
In a Spanner instance, what is the role of non-witness replicas in the background during writes?
What does client write requests to a Spanner instance always go to first, regardless of the location?
What does client write requests to a Spanner instance always go to first, regardless of the location?
What is true about adding optional read-only replicas to a custom regional instance configuration in Google Cloud Spanner?
What is true about adding optional read-only replicas to a custom regional instance configuration in Google Cloud Spanner?
What is NOT a role of witness replicas in Google Cloud Spanner's multi-region configurations?
What is NOT a role of witness replicas in Google Cloud Spanner's multi-region configurations?
What is one thing that read-only replicas in Spanner instances do NOT vote for?
What is one thing that read-only replicas in Spanner instances do NOT vote for?
What happens when a majority of voting replicas agree to commit a write in Google Cloud Spanner?
What happens when a majority of voting replicas agree to commit a write in Google Cloud Spanner?
What is one key reason for adding witness replicas to a multi-region configuration in Google Cloud Spanner?
What is one key reason for adding witness replicas to a multi-region configuration in Google Cloud Spanner?
What is a characteristic of read-write replicas in Google Cloud Spanner?
What is a characteristic of read-write replicas in Google Cloud Spanner?
What is the purpose of adding optional read-only replicas to a custom Spanner instance configuration?
What is the purpose of adding optional read-only replicas to a custom Spanner instance configuration?
What is the main responsibility of leader replicas in Google Cloud Spanner?
What is the main responsibility of leader replicas in Google Cloud Spanner?
What is the impact of moving a Spanner instance to a different instance configuration?
What is the impact of moving a Spanner instance to a different instance configuration?
What is the main purpose of creating replicas of each database split in Cloud Spanner?
What is the main purpose of creating replicas of each database split in Cloud Spanner?
What do read-write regions in a multi-region configuration contain?
What do read-write regions in a multi-region configuration contain?
What does compute capacity define for an instance in Cloud Spanner?
What does compute capacity define for an instance in Cloud Spanner?
What should you monitor when removing compute capacity from a Spanner instance?
What should you monitor when removing compute capacity from a Spanner instance?
What must your Google Cloud project have in order to increase the compute capacity of an instance?
What must your Google Cloud project have in order to increase the compute capacity of an instance?
What is required before deleting an instance that has databases with deletion protection enabled?
What is required before deleting an instance that has databases with deletion protection enabled?
What does Spanner oversee as a fully managed database service?
What does Spanner oversee as a fully managed database service?
What does not offer a way to manually stop or restart a given instance in Spanner?
What does not offer a way to manually stop or restart a given instance in Spanner?
What is the purpose of leader replicas in Google Cloud Spanner?
What is the purpose of leader replicas in Google Cloud Spanner?
What do labels help organize within Google Cloud resources?
What do labels help organize within Google Cloud resources?
Flashcards are hidden until you start studying
Study Notes
Spanner Instance Creation
- Creating a Spanner instance involves choosing instance configuration, which defines the geographic placement and replication of databases.
- Two important choices in instance creation are instance configuration and compute capacity.
Instance Configuration
- Instance configuration defines the geographic placement and replication of databases in a Cloud Spanner instance.
- Regional instance configurations span a single region, while multi-region instance configurations span more than one region.
- Multi-region instance configurations are used for high availability and disaster recovery.
Compute Capacity
- Compute capacity defines the server and storage resources for an instance in Cloud Spanner.
- Compute capacity is specified in processing units, with 1000 processing units being equivalent to 1 node.
- When specifying compute capacity larger than 1000 processing units, units of 1000 (e.g., 2000, 3000) can be used.
Instance Management
- Spanner is a fully managed database service, overseeing database storage, replication, and performance.
- Compute capacity can be adjusted for an instance, but decreasing compute capacity is not allowed when there are outstanding writes or reads.
- When removing compute capacity from a Spanner instance, monitor the instance's performance and adjust as needed.
Data Storage
- Data is stored in the region specified in the instance configuration.
- Storage limits are determined by the instance configuration and compute capacity.
- Spanner bills for instance storage based on usage.
Performance and Availability
- Spanner distributes data across zones of one or more regions to provide high performance and availability.
- Read-only replicas can be added to a custom regional instance configuration to improve read performance.
- Moving a Spanner instance to a different instance configuration can affect application latency.
Replication and Voting
- Cloud Spanner uses a synchronous replication scheme to replicate data at the byte level.
- The high-level organization unit for data replication is the database split.
- Witness replicas play a crucial role in forming a write quorum in multi-region configurations.
- Read-only replicas do not vote on write requests.
Leader and Witness Regions
- The leader region is responsible for handling writes and distributing data to read-only replicas.
- Witness regions play a crucial role in forming a write quorum in multi-region configurations.
- Witness replicas do not store data and are used only for voting purposes.
Instance Configuration and Performance
- The default leader region can be changed, affecting application latency.
- Adding optional read-only replicas to a custom regional instance configuration can improve read performance.
- Moving a Spanner instance to a different instance configuration can affect application latency.
Read-Only Replicas
- Read-only replicas can be added to a custom regional instance configuration to improve read performance.
- Read-only replicas do not vote on write requests and do not store data.
- Adding optional read-only replicas to a custom regional instance configuration can improve read performance.
Multi-Region Configurations
- Multi-region configurations span more than one region for high availability and disaster recovery.
- Witness replicas play a crucial role in forming a write quorum in multi-region configurations.
- The primary benefit of multi-region instances is high availability and disaster recovery.
- The main role of read-only replicas in multi-region configurations is to improve read performance.
Witness Replicas
- Witness replicas do not store data and are used only for voting purposes.
- Witness replicas play a crucial role in forming a write quorum in multi-region configurations.
- Witness replicas enable fast writes in multi-region configurations.
Cloud Spanner Benefits
- Cloud Spanner provides high performance, high availability, and disaster recovery capabilities.
- Cloud Spanner uses synchronous replication to replicate data at the byte level.
- Spanner instances can be configured to provide high availability and disaster recovery.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
