Sourced from github.com/redis/go-redis/v9's releases.

9.19.0

🚀 Highlights

FIPS-Compatible Script Helper

Script now supports a FIPS-safe execution mode that avoids client-side SHA-1 computation, which is blocked in strict FIPS environments. A new NewScriptServerSHA constructor uses SCRIPT LOAD to obtain and cache the digest from the server, then runs commands via EVALSHA/EVALSHA_RO. Falls back to EVAL/EVALRO if loading fails, and transparently retries once on NOSCRIPT. The default behavior is unchanged for existing users.

(#3700) by @​chaitanyabodlapati

FT.AGGREGATE Step-Based Pipeline Builder

Added a new step-based FT.AGGREGATE pipeline API via FTAggregateOptions.Steps, allowing LOAD, APPLY, GROUPBY, and SORTBY (with per-step MAX) to be repeated and interleaved in arbitrary order — matching Redis's native multi-stage aggregation semantics. The legacy Load/Apply/GroupBy/SortBy/SortByMax fields are now deprecated.

(#3782) by @​ndyakov

Raw RESP Protocol Access

Added DoRaw and DoRawWriteTo methods for executing arbitrary commands and reading the raw RESP response. Useful for proxying, custom protocol inspection, and working with commands not yet wrapped by go-redis.

(#3713) by @​ofekshenawa

Configurable Dial Retry Backoff

Added DialerRetryBackoff option (plumbed through Options, ClusterOptions, RingOptions, FailoverOptions) to let callers customize the delay between failed dial attempts. Helpers DialRetryBackoffConstant and DialRetryBackoffExponential (with jitter and cap) are provided out of the box. Dial timeout is now also applied per attempt rather than across all retries.

(#3706, #3705) by @​mwhooker

✨ New Features

• FT.AGGREGATE Steps: Step-based pipeline builder for FT.AGGREGATE with support for repeated/interleaved LOAD, APPLY, GROUPBY, and SORTBY stages (#3782) by @​ndyakov
• VectorSet commands: Added VISMEMBER and WITHATTRIBS support (#3753) by @​romanpovol
• FIPS-safe Script: NewScriptServerSHA uses SCRIPT LOAD to obtain the digest from the server, avoiding client-side SHA-1 (#3700) by @​chaitanyabodlapati
• Raw RESP access: DoRaw and DoRawWriteTo for raw RESP protocol access (#3713) by @​ofekshenawa
• Dial retry backoff: DialerRetryBackoff function option with constant and exponential helpers (#3706) by @​mwhooker
• Typed NOSCRIPT error: Redis NOSCRIPT replies are now surfaced as a typed error for easier handling (#3738) by @​LINKIWI
• PubSub ClientSetName: Added ClientSetName method to PubSub (#3727) by @​Flack74
• ReplicaOf: New ReplicaOf method replaces the deprecated SlaveOf (#3720) by @​Copilot
• HSCAN BinaryUnmarshaler: HScan now supports types implementing encoding.BinaryUnmarshaler (#3768) by @​Aaditya-dubey1

🐛 Bug Fixes

• Auto hostname type detection: Improved endpoint type detection for maintenance notifications using DNS-based classification; handles empty hosts and expanded private-IP ranges (#3789) by @​ndyakov
• HELLO fallback: Don't send CLIENT MAINT_NOTIFICATIONS handshake when HELLO fails and connection falls back to RESP2; fail fast when explicitly enabled with RESP3 (#3788) by @​ndyakov
• Dial TCP retry: ShouldRetry now treats net.OpError with Op == "dial" timeout errors as safe to retry since no command was sent (#3787) by @​vladisa88
• wrappedOnClose leak: Fixed resource leak caused by repeatedly wrapping baseClient close logic; replaced with a bounded, concurrency-safe named-hook registry (#3785) by @​ndyakov
• Pool Close() on stale connections: Suppress close errors (e.g., TLS closeNotify timeouts) for connections already dropped by the server due to idle timeout (#3778) by @​ofekshenawa
• FIFO waiter ordering: Fixed race in ConnStateMachine.notifyWaiters that could wake multiple waiters under a single mutex hold and violate FIFO ordering (#3777) by @​0x48core
• Lua READONLY detection: Detect READONLY errors embedded in Lua script error messages on read-only replicas so commands are correctly retried (#3769) by @​zhengjilei
• VectorScoreSliceCmd RESP2: Fixed VSimWithScores, VSimWithArgsWithScores, and VLinksWithScores which were broken on RESP2 connections returning flat arrays instead of maps (#3767) by @​Copilot

... (truncated)

Sourced from github.com/redis/go-redis/v9's changelog.

9.19.0 (2026-04-27)

🚀 Highlights

FIPS-Compatible Script Helper

Script now supports a FIPS-safe execution mode that avoids client-side SHA-1 computation, which is blocked in strict FIPS environments. A new NewScriptServerSHA constructor uses SCRIPT LOAD to obtain and cache the digest from the server, then runs commands via EVALSHA/EVALSHA_RO. Falls back to EVAL/EVALRO if loading fails, and transparently retries once on NOSCRIPT. The default behavior is unchanged for existing users.

(#3700) by @​chaitanyabodlapati

FT.AGGREGATE Step-Based Pipeline Builder

Added a new step-based FT.AGGREGATE pipeline API via FTAggregateOptions.Steps, allowing LOAD, APPLY, GROUPBY, and SORTBY (with per-step MAX) to be repeated and interleaved in arbitrary order — matching Redis's native multi-stage aggregation semantics. The legacy Load/Apply/GroupBy/SortBy/SortByMax fields are now deprecated.

(#3782) by @​ndyakov

Raw RESP Protocol Access

Added DoRaw and DoRawWriteTo methods for executing arbitrary commands and reading the raw RESP response. Useful for proxying, custom protocol inspection, and working with commands not yet wrapped by go-redis.

(#3713) by @​ofekshenawa

Configurable Dial Retry Backoff

Added DialerRetryBackoff option (plumbed through Options, ClusterOptions, RingOptions, FailoverOptions) to let callers customize the delay between failed dial attempts. Helpers DialRetryBackoffConstant and DialRetryBackoffExponential (with jitter and cap) are provided out of the box. Dial timeout is now also applied per attempt rather than across all retries.

(#3706, #3705) by @​mwhooker

✨ New Features

• FT.AGGREGATE Steps: Step-based pipeline builder for FT.AGGREGATE with support for repeated/interleaved LOAD, APPLY, GROUPBY, and SORTBY stages (#3782) by @​ndyakov
• VectorSet commands: Added VISMEMBER and WITHATTRIBS support (#3753) by @​romanpovol
• FIPS-safe Script: NewScriptServerSHA uses SCRIPT LOAD to obtain the digest from the server, avoiding client-side SHA-1 (#3700) by @​chaitanyabodlapati
• Raw RESP access: DoRaw and DoRawWriteTo for raw RESP protocol access (#3713) by @​ofekshenawa
• Dial retry backoff: DialerRetryBackoff function option with constant and exponential helpers (#3706) by @​mwhooker
• Typed NOSCRIPT error: Redis NOSCRIPT replies are now surfaced as a typed error for easier handling (#3738) by @​LINKIWI
• PubSub ClientSetName: Added ClientSetName method to PubSub (#3727) by @​Flack74
• ReplicaOf: New ReplicaOf method replaces the deprecated SlaveOf (#3720) by @​Copilot
• HSCAN BinaryUnmarshaler: HScan now supports types implementing encoding.BinaryUnmarshaler (#3768) by @​Aaditya-dubey1

🐛 Bug Fixes

• Auto hostname type detection: Improved endpoint type detection for maintenance notifications using DNS-based classification; handles empty hosts and expanded private-IP ranges (#3789) by @​ndyakov
• HELLO fallback: Don't send CLIENT MAINT_NOTIFICATIONS handshake when HELLO fails and connection falls back to RESP2; fail fast when explicitly enabled with RESP3 (#3788) by @​ndyakov
• Dial TCP retry: ShouldRetry now treats net.OpError with Op == "dial" timeout errors as safe to retry since no command was sent (#3787) by @​vladisa88
• wrappedOnClose leak: Fixed resource leak caused by repeatedly wrapping baseClient close logic; replaced with a bounded, concurrency-safe named-hook registry (#3785) by @​ndyakov
• Pool Close() on stale connections: Suppress close errors (e.g., TLS closeNotify timeouts) for connections already dropped by the server due to idle timeout (#3778) by @​ofekshenawa
• FIFO waiter ordering: Fixed race in ConnStateMachine.notifyWaiters that could wake multiple waiters under a single mutex hold and violate FIFO ordering (#3777) by @​0x48core
• Lua READONLY detection: Detect READONLY errors embedded in Lua script error messages on read-only replicas so commands are correctly retried (#3769) by @​zhengjilei
• VectorScoreSliceCmd RESP2: Fixed VSimWithScores, VSimWithArgsWithScores, and VLinksWithScores which were broken on RESP2 connections returning flat arrays instead of maps (#3767) by @​Copilot

... (truncated)

• e7e9866 chore(release): v9.19.0 (#3796)
• 22b26f4 feat(ft.aggregate): Add Steps for query building (#3782)
• d9d7694 fix(pool): two fixes for closed connection handling (#3764)
• 44e8b73 fix(sch): auto hostname type detection (#3789)
• ad21622 fix(hello): do not send maintnotifications handshake when hello fails (#3788)
• 1a7ac74 fix(pool): suppress pool Close() errors for stale connections (#3778)
• 903d6bd fix(retry): make dial tcp error redirectable (#3786) (#3787)
• 00a551b fix(credentials): leak in wrappedOnClose (#3785)
• b5a6f99 refactor(pool): remove redundant Conn.closed atomic field (#3783)
• 928f27a feat(hscan): add support for encoding.BinaryUnmarshaler (#3768)
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