Instance Specifications

Instances of the same type can have different memory specifications. You can select instances of different specifications based on application scenarios.

This section describes the instance specifications supported by GeminiDB Influx. The instance specifications depend on the selected CPU model.

**Table 1** GeminiDB Influx cluster instance specifications
Data Node Flavor	Analysis Node Flavor	vCPUs	Memory (GB)	Min. Storage Space (GB)	Max. Storage Space (GB)	Default Maximum Connections per Node	Time Series per Node (unit: 10,000)	Max. RPs per Cluster	Maximum Fields per Query	Maximum Time Series per Query
geminidb.influxdb.large.4	nosql.mcs.c6.large.4	2	8	100	12,000	500	4	40	1,000	5,000
geminidb.influxdb.xlarge.4	nosql.mcs.c6.xlarge.4	4	16	100	24,000	500	16	40	2,000	20,000
geminidb.influxdb.2xlarge.4	nosql.mcs.c6.2xlarge.4	8	32	100	48,000	1,000	64	80	4,000	80,000
geminidb.influxdb.4xlarge.4	nosql.mcs.c6.4xlarge.4	16	64	100	96,000	2,000	256	160	8,000	320,000
geminidb.influxdb.8xlarge.4	nosql.mcs.c6.8xlarge.4	32	128	100	192,000	4,000	1,024	320	16,000	1,280,000
geminidb.influxdb.large.8	nosql.mcs.c6.large.8	2	16	100	12,000	750	6	60	1,500	7,500
geminidb.influxdb.xlarge.8	nosql.mcs.c6.xlarge.8	4	32	100	24,000	750	24	60	3,000	30,000
geminidb.influxdb.2xlarge.8	nosql.mcs.c6.2xlarge.8	8	64	100	48,000	1,500	96	120	6,000	120,000
geminidb.influxdb.4xlarge.8	nosql.mcs.c6.4xlarge.8	16	128	100	96,000	3,000	384	240	12,000	480,000
geminidb.influxdb.8xlarge.8	nosql.mcs.c6.8xlarge.8	32	256	100	192,000	6,000	1,536	480	24,000	1,920,000

When the memory usage of a GeminiDB Influx instance node reaches:

90% or higher, queries running the longest are killed and new queries are not allowed.

80% or higher, new read and write requests are slowed down.

**Table 2** Requests per second on nodes of different specifications and memory usages
Memory Usage (Unit: %)	2 vCPUs \| 8 GB		4 vCPUs \| 16 GB		8 vCPUs \| 32 GB		16 vCPUs \| 64 GB		32 vCPUs \| 128 GB
-	Read	Write	Read	Write	Read	Write	Read	Write	Read	Write
80 ≤ Memory usage < 85	100	300	100	300	180	480	280	750	470	1200
85 ≤ Memory usage < 90	66	200	66	200	120	320	186	500	313	800
90 ≤ Memory usage < 95	50	150	50	150	90	240	140	375	235	600
95 ≤ Memory usage < 100	40	120	40	120	72	192	112	300	188	480