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Goland environment variables drivers#
Goland environment variables driver#
Goland environment variables code#

pgx supports database/sql as well as its own interface. Pq is exclusively used with database/sql.

Goland environment variables driver#

See go_db_bench for some database driver benchmarks. pgx also can perform better when using PostgreSQL-specific data types or query batching. However, if prepared statements aren’t being explicitly used, pgx can have a significant performance advantage due to automatic statement preparation.

Goland environment variables drivers#

Batched queries – Multiple queries can be batched together to minimize network round trips.įor prepared queries with small sets of simple data types, all drivers will have have similar performance.Under certain workloads, it can perform nearly 3x the number of queries per second.

Goland environment variables code#

This can provide an significant free improvement to code that does not explicitly use prepared statements.

Automatic statement preparation and caching – pgx will prepare and cache statements by default.

PostgreSQL specific types – Types such as arrays can be parsed much quicker because pgx uses the binary format.

There are three areas in particular where pgx can provide a significant performance advantage over the standard database/sql interface and other drivers:

Simulated nested transactions with savepoints.

Supports database/sql.Scanner and database/sql/driver.Valuer interfaces for custom types.

NULL mapping to Null* struct or pointer to pointer.

Maps inet and cidr PostgreSQL types to net.IPNet and net.IP.Conversion of PostgreSQL arrays to Go slice mappings for integers, floats, and strings.Connection pool with after-connect hook for arbitrary connection setup.Extendable logging support including built-in support for log15adapter, logrus, zap, and zerolog.Copy protocol support for faster bulk data loads.Binary format support for custom types (allows for much quicker encoding/decoding).Automatic statement preparation and caching.Support for approximately 70 different PostgreSQL types.Pgx supports many features beyond what is available through database/sql: The binary format can be substantially faster, which is what the pgx interface uses. Handling other types requires implementing the database/sql.Scanner and the database/sql/driver/driver.Valuer interfaces which require transmission of values in text format. The database/sql interface only allows the underlying driver to return or receive the following types: int64, float64, bool, byte, string, time.Time, or nil. The pgx interface is faster and exposes more features. No other libraries that require database/sql are in use.The application only targets PostgreSQL.It is recommended to use the pgx interface if: See the getting started guide for more information.Ĭhoosing Between the pgx and database/sql Interfaces Background(), "select name, weight from widgets where id=$1", 42). Var name string var weight int64 err = conn.

Stderr, "Unable to connect to database: %v \n", err)ĭefer conn.