# Typesense v0.15.0

This section of the documentation is for v0.15.0. Please use the version dropdown in the Navbar to switch to other versions.

To learn more about Typesense, visit the non-version specific section of the documentation here.

The documentation is divided into the following sections:

# What's new

This release contains several new features, bug fixes and performance improvements.

Performance Improvements

Adopted jemalloc: we're now using jemalloc as the memory allocator. In our tests, jemalloc showed significantly better performance and lower memory fragmentation.
Streaming import: You can now safely import large number of documents into Typesense without a drastic impact on search latency. We've also changed the output format of the import end-point: the response will now be in JSON lines rather than as a full-fledged JSON document.
Significant performance improvement in wildcard queries and faceting involving array fields.

Features

Allow default sorting field to be an int64.
Ensured that the server returns a 503 response when it is still catching up on the writes from the leader. This threshold can be controlled by the --catch-up-threshold-percentage argument (default: 95).
Data snapshot interval can now be customized by the --snapshot-interval-seconds argument (default: 3600).
Metrics API: we've added a /metrics.json end-point that returns CPU, storage and memory metrics.
Exact filtering on string field: It's now possible to match a facet-enabled string field exactly in the filter query by using the := operator.

Bug Fixes

Clustering improvements: We've fixed a number of performance issues and edge cases by extensively benchmarking the clustering implementation via multi-region deployments.
Fixed a race condition that sometimes prevented a Typesense node from recognizing custom generated API keys.
Fixed an edge case in text match score calculation that caused relevancy issues on long queries.
Fixed a crash that happened when an int32 field was filtered by a number exceeding the range of a valid int32 value.