InfluxDB is a time series database that offers various features and improvements, including timestamp precision, multiple fields function, and common field value workarounds. When writing data to InfluxDB using the HTTP API, specifying coarsest possible timestamp precision can maximize performance. The use of the `precision=s` query string parameter is recommended for optimal results. Additionally, InfluxDB version 1.0 supports aggregation functions that allow calculating averages for all fields in a single measurement by using an asterisk (`*`) to specify all fields. Furthermore, the `mode()` function has been introduced in version 1.0, enabling users to find the most common field value in a field.