Changelog#

v0.16.2 - 2026-01-08#

• Add support for connecting to Memcached servers over UNIX sockets. #233 #234 #236 #237

v0.15.0 - 2025-06-26#

• Change retry behavior of DNS lookups (used for the dns binary and cache server service discovery) to try all configured DNS servers and then retry. #202
• Refactor and improve performance of parsing DNS results. #206 #209 #211 #213
• Introduce a max size for individual cache results of 1GB. #215

v0.14.0 - 2025-02-05#

• Add flush-all subcommand to mc to flush all entries from a cache. #196

v0.13.1 - 2024-10-26#

• Fix an issue where a DNS TCP buffer was incorrectly reused resulting in corrupt messages. #189

v0.13.0 - 2024-08-23#

• Add support for using environment variables to set all optional arguments of the mtop, mc, and dns binaries. #169
• Fix an issue where hosts could be duplicated when resolved via SRV records. #185
• Fix an issue where 0 could be passed to various CLI flags where it did not make sense, sometimes causing panics. #181
• Change output format of mc check to group operation timings by type. #178

v0.12.1 - 2024-07-24#

• Document architecture and limitations of internal DNS resolver. #166
• Fix a bug where hostnames were not fully qualified when encoded by dns write. #162
• Validate the response to a connection tests to ensure we're talking to a Memcached server. #161
• Don't attempt to resolve Memcached hostnames without special prefixes. #159
• Add --nameserver flag to dns binary to allow setting a server directly. #158
• Gracefully handle SIGINT in mc and dns binaries. #158
• Close Memcached connections when the last request resulted in an error. #156
• Ensure newly introduced trace logging doesn't break the terminal UI. #152

v0.11.0 - 2024-06-24#

• Add dns ping subcommand to dns binary to repeatedly perform DNS queries. #149
• Performance improvements when parsing DNS names. #148
• Add support for profiling to dns binary. #147
• Don't try to resolve IP address hostnames. #144
• Fix off-by-one error when validating DNS TXT record lengths. #142

v0.10.1 - 2024-05-21#

• Add dns binary to Docker image. #139

v0.10.0 - 2024-05-21#

• Add support for discovering hosts using DNS SRV records. #133 #131 #134 #136 #137
• Use a shorter TTL for entries written via mc bench. #130

v0.9.0 - 2024-02-12#

• Change host selection in mtop to allow more host tabs than fit on the screen. #119
• Change default colors in mtop to dark theme based on tailwind color palette. #122
• Allow other mtop color palettes to be selected via the --theme flag. #124
• Switch mtop memory, connections, and hit ratio gauges to unicode for finer grained bars. #125

v0.8.0 - 2024-02-04#

• Add default 5 second timeout to network operations done by mtop. #90
• Add default 30 second timeout to network operaitons done by mc. #111
• Add bench, incr, decr, add, and replace commands to mc. #95 #98 #111
• TLS related dependency updates. #93
• Create high-level client for operating on multiple servers. #101

v0.7.0 - 2023-11-28#

• Build binaries for Linux Musl libc target. #83
• Move "Bytes tx" under "Gets" and "Bytes rx" under "Sets". #84
• Create a check subcommand for mc to test connections to a server. #86

v0.6.9 - 2023-10-11#

• Build Docker images for arm64 architecture. #78

v0.6.8 - 2023-10-07#

• Build Docker images for each release. #72

v0.6.7 - 2023-09-09#

• Perform health checks on Memcached connections in the connection pool. #63
• Improve performance of metadata parsing, e.g. mc keys. #64

v0.6.3 - 2023-08-24#

• Split Memcached client into a separate crate. #58
• Require --tls-cert flag if --tls-key is present and vice versa in mtop and mc. #58

v0.6.2 - 2023-08-21#

• Update dependencies. #49 #53
• Change slab max age display format to HH:MM:SS. #52
• Fix inconsistent byte formatting behavior. #55

v0.6.1 - 2023-07-20#

• Fetch stats from each server in mtop in parallel. #46

v0.6.0 - 2023-07-10#

• Add UI to mtop for per-slab metrics. #41
• Add support for dns+ hostname prefix to resolve a DNS name to multiple hosts. #43
• Update dependencies. #44

v0.5.1 - 2023-06-12#

• Fix a bug where stats for some servers were not updated if another server returned an error. #34

v0.5.0 - 2023-04-30#

• Minor performance improvement when running mc keys. #26
• Build binary artifacts for tags using cargo-dist. #27

v0.4.2 - 2023-04-18#

• Exit the mtop UI on CTRL-c in addition to q. #19

v0.4.1 - 2023-03-22#

• Fixed an issue where mc keys would fail for items without a TTL. #16

v0.4.0 - 2023-03-17#

• Add the ability to use mTLS connections to Memcached for mc and mtop. #13
• Add --details flag to mc keys to show item expiration time and size. #14

v0.3.0 - 2023-03-04#

• Introduce mc binary for running Memcached operations from the command line. #7

v0.2.0 - 2023-02-22#

• Errors fetching stats are logged to a file instead of stderr. #6

v0.1.1 - 2023-02-09#

• Documentation improvements. #3 #4 #5
• Log errors to stderr instead of stdout. #2

v0.1.0 - 2023-02-06#

• Initial release.