Read requests

API calls to read data from your database are billed in units called Transactional Read Ops (TROs).

A read request (by default strongly consistent and transactional) of up to 4KB requires one TRO. For items larger than 4KB, additional TROs are required. For example, a read request of an 8KB item requires two TROs.

Write requests

API calls to write data your database are billed in units called Transactional Write Ops (TWOs).

A write request (by default transactional and replicated) of up to 1KB requires one TWO. For items larger than 1KB, additional TWOs are required. For example, a write request of a 3KB  item requires three TWOs.

User-defined functions (UDFs) & API calls

API calls to your database  incur CPU usage that is billed in units called Transactional Compute Ops (TCOs).

An API call that contains up to 50 function calls requires one TCO. For example, [Paginate(Match("users_by_email", "abc@fauna")] costs one TRO + one TCO. 

Data storage

Data written to your database is billed in terms of disk space used, and called Data Storage.

Storage is measured in GB, and includes the total volume of data stored on disk for each write, including storage incurred for replication and temporality. 

Database streams

Streams are billed as a sum of the cpu time consumed for keeping a stream open (TCOs)  and the number of reads (TROs).

The cost of running a stream is billed in TCOs. Reads are billed in TROs.

Database indexing

New index creation is billed in terms in of CPU consumed (TCOs) for building that index.

Building indexes is charged in terms of TCOs consumed depending on the size of the index.

Transactional Read Ops (TROs)

$0.50/ Million

Transactional Write Ops (TWOs)

$2.50/ Million

Transactional Compute Ops (TCOs)

$2.25/ Million

Data Storage

$0.25/GB

Data Transfer

Included

First $1 - $1,000

None

Next $1,001 - $2,500

5%

Next $2,501 - $10,000

10%

Next $10,001 - $25,000

15%

Next $25,001 and above

20%