Timescale Cloud allows you to customize many TimescaleDB and PostgreSQL configuration options for each Service individually. Most configuration values for a Service are initially set in accordance with best practices given the compute and storage settings of the Service. Any time you increase or decrease the compute for a Service the most essential values are set to reflect the size of the new Service.
There are times, however, when your specific workload may require tuning some of the many available TimescaleDB and PostgreSQL parameters. By providing the ability to tune various runtime settings, Timescale Cloud provides the balance and flexibility you need when running your workloads in our hosted environment.
To modify configuration parameters, first select the Service that you want to
modify. This displays the
service details, with these tabs across the top:
Overview, Operations, Metrics, Logs, and Settings. Select
Under the Settings tab, you can modify a limited set of the parameters that are most often modified in a TimescaleDB or PostgreSQL instance. To modify a configured value, click the value that you would like to change. This reveals an editable field to apply your change. Clicking anywhere outside of that field will save the value to be applied.
When you have modified the configuration parameters that you would
like to change, click
Apply Changes. For some changes, such as
timescaledb.max_background_workers (pictured below), the Service needs to be
restarted. In this case, the button reads
Restart and apply changes.
Regardless of whether the Service needs to be restarted or not, a confirmation
dialog is displayed which lists the parameters that are being modified. Click
Confirm to apply the changes (and restart if necessary).
It is also possible to configure a wide variety of Service database parameters
Show advanced parameters in the upper-right corner of the
Once toggled, a scrollable (and searchable) list of configurable parameters is displayed.
As with the basic database configuration parameters, any changes are highlighted
Apply changes (or
Restart and apply changes) button is available to
click, prompting you to confirm any changes before the Service is modified.
You can use PostgreSQL extensions with Timescale Cloud. If you run
pg_available_extensions at the command prompt, the returned list of extensions
is inaccurate. To see the allowed extensions, use this command instead:
SELECT pae.* FROM current_setting('extwlist.extensions') AS cs(e) CROSS JOIN regexp_split_to_table(e, ',') AS ext(allowed) JOIN pg_available_extensions AS pae ON (allowed=name) ORDER BY 1;
These are the currently supported extensions:
|bloom||Bloom access method - signature file based index|
|btree_gin||Support for indexing common datatypes in GIN|
|btree_gist||Support for indexing common datatypes in GiST|
|citext||Data type for case-insensitive character strings|
|cube||Data type for multidimensional cubes|
|dict_int||Text search dictionary template for integers|
|dict_xsyn||Text search dictionary template for extended synonym processing|
|fuzzystrmatch||Determine similarities and distance between strings|
|hstore||Data type for storing sets of (key, value) pairs|
|intarray||Functions, operators, and index support for 1-D arrays of integers|
|isn||Data types for international product numbering standards|
|lo||Large Object maintenance|
|ltree||Data type for hierarchical tree-like structures|
|pg_stat_statements||Track execution statistics of all SQL statements executed|
|pg_trgm||Text similarity measurement and index searching based on trigrams|
|postgis||PostGIS geometry and geography spatial types and functions|
|postgis_raster||PostGIS raster types and functions|
|postgis_sfcgal||PostGIS SFCGAL functions|
|postgis_tiger_geocoder||PostGIS tiger geocoder and reverse geocoder|
|postgis_topology||PostGIS topology spatial types and functions|
|promscale||Promscale support functions|
|seg||data type for representing line segments or floating-point intervals|
|tablefunc||Functions that manipulate whole tables, including crosstab|
|tcn||Triggered change notifications|
|timescaledb||Enables scalable inserts and complex queries for time-series data|
|tsm_system_rows||TABLESAMPLE method which accepts number of rows as a limit|
|tsm_system_time||TABLESAMPLE method which accepts time in milliseconds as a limit|
|unaccent||Text search dictionary that removes accents|
|uuid-ossp||Generate universally unique identifiers (UUIDs)|
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