My next post will put window functions to work, as I want to compare the FlexyPool empirical metrics to the queueing theory probabilities.Import CSV file into a table using pgAdmin. If you enjoyed this article, I bet you are going to love my Book and Video Courses as well.Īfter running this script we got the following fully-loaded PostgreSQL tables: NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "retry_attempts_histogram_pkey" for table "retry_attempts_histogram" Importing Histogram file: D:\metrics/retryAttemptsHistogram.csv to retry_attempts_histogram table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "overflow_pool_size_histogram_pkey" for table "overflow_pool_size_histogram"
Importing Histogram file: D:\metrics/overflowPoolSizeHistogram.csv to overflow_pool_size_histogram table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "overall_connection_acquire_millis_pkey" for table "overall_connection_acquire_millis" Importing Timer file: D:\metrics/overallConnectionAcquireMillis.csv to overall_connection_acquire_millis table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "max_pool_size_histogram_pkey" for table "max_pool_size_histogram" Importing Histogram file: D:\metrics/maxPoolSizeHistogram.csv to max_pool_size_histogram table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "connection_lease_millis_pkey" for table "connection_lease_millis" Importing Timer file: D:\metrics/connectionLeaseMillis.csv to connection_lease_millis table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "connection_acquire_millis_pkey" for table "connection_acquire_millis" Importing Timer file: D:\metrics/connectionAcquireMillis.csv to connection_acquire_millis table
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "concurrent_connections_histogram_pkey" for table "concurrent_connections_histogram" Importing Histogram file: D:\metrics/concurrentConnectionsHistogram.csv to concurrent_connections_histogram table NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "concurrent_connection_requests_histogram_pkey" for table "concurrent_connection_requests_histogram" Importing Histogram file: D:\metrics/concurrentConnectionRequestsHistogram.csv to concurrent_connection_requests_histogram table $ dos2unix codahale_metrics_csv_to_postgres.shĭos2unix: converting file codahale_metrics_csv_to_postgres.sh to Unix format /cygdrive/d/metrics
Import_histogram $table_name $csv_file_pathīecause PostgreSQL requires Windows paths we need to use the $(cygpath -w pwd) command to translate the Cygwin like paths to their Windows equivalent. Scripting timeĬoncurrentConnectionRequestsHistogram.csvĪll these files are Dropwizard Metrics histogram and timer metrics and this is how the import script looks like:Įcho "Importing Histogram file: $2 to $1 table"Įcho "Importing Timer file: $2 to $1 table" Python is powerful and expressive while Bash scripting doesn’t need too many dependencies, even on Windows. If your database engine supports SQL:2003 windows functions you should definitely make use of this great feature.įor scripting, I mostly rely on Python or Bash scripting. When it comes to aggregation tabular data SQL is at its best. My previous post demonstrated FlexyPool metrics capabilities and all connection related statistics were exported in CSV format. Many database servers support CSV data transfers and this post will show one way you can import CSV files to PostgreSQL. So, enjoy spending your time on the things you love rather than fixing performance issues in your production system on a Saturday night! Well, Hypersistence Optimizer is that tool!Īnd it works with Spring Boot, Spring Framework, Jakarta EE, Java EE, Quarkus, or Play Framework. Follow having a tool that can automatically detect JPA and Hibernate performance issues.