Revenues - Disaggregation of Revenue by Product and Service (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 87,407	$ 49,930
Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	100.00%	100.00%
Subscription—self-managed and SaaS
Disaggregation of Revenue [Line Items]
Total revenue	$ 76,923	$ 44,908
Subscription—self-managed and SaaS | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	88.00%	90.00%
Subscription—self-managed
Disaggregation of Revenue [Line Items]
Total revenue	$ 59,719	$ 36,115
Subscription—self-managed | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	68.00%	72.00%
SaaS
Disaggregation of Revenue [Line Items]
Total revenue	$ 17,204	$ 8,793
SaaS | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	20.00%	18.00%
License—self-managed and other
Disaggregation of Revenue [Line Items]
Total revenue	$ 10,484	$ 5,022
License—self-managed and other | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	12.00%	10.00%
License—self-managed
Disaggregation of Revenue [Line Items]
Total revenue	$ 8,777	$ 3,667
License—self-managed | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	10.00%	7.00%
Professional services and other
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,707	$ 1,355
Professional services and other | Revenue from Contract with Customer, Product and Service Benchmark | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	2.00%	3.00%