# MinIO RELEASE.2019-05-14T23-57-45Z — Release & Upgrade Intelligence
- **Product:** MinIO (https://min.io)
- **Version:** RELEASE.2019-05-14T23-57-45Z
- **Released:** May 15, 2019
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/minio/updates/RELEASE.2019-05-14T23-57-45Z/

## Executive Summary (TL;DR)
MinIO RELEASE.2019-05-14T23-57-45Z. Source highlight: MinIO server runs in high performance mode by turning off content-md5 sum calculation by default. See #7609 for more details. To run MinIO server in strict S3 compatibility mode, please start server with --compat flag.

## Breaking Changes & Deprecations
- - Simplify putObject by not breaking the stream into parts (#7199) (05/14/19)

## New Features
- Add connection close proactively for Walk() http/rpc (#7645) (05/14/19)
- Add API retry functionality in mc admin (#7602) (05/09/19)

## Improvements
- MinIO server runs in high performance mode by turning off content-md5 sum calculation by default. See #7609 for more details. To run MinIO server in strict S3 compatibility mode, please start server with --compat flag.
- Major performance improvements in listing. See (#7611) for more details.
- Major performance improvements in bulk object deletes. See (#7607 and #7644) for more details.

## Bug Fixes
- Separate issue templates for bug report and feature requests (#7616) (05/07/19)
- Fix: Handle regression caused by gorilla mux v1.7.0 (#7625) (05/07/19)
- Fix listing empty directory in recursive mode (#7613) (05/06/19)