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Perf: cache iconv decoder #2391

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merged 3 commits into from
Jan 23, 2024

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sandinmyjoints
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@sandinmyjoints sandinmyjoints commented Jan 22, 2024

While getting an iconv decoder isn't particularly slow, I noticed it happens a lot when decoding lots of varchar rows. From internal testing, with 5000 rows of a table containing two varchar utf8mb3 columns (length 100 and 500), I'm seeing about 12% speedup with this change.

if (Buffer.isEncoding(encoding)) {
return buffer.toString(encoding, start, end);
}

const decoder = Iconv.getDecoder(encoding, options || {});
// Optimize for common case: encoding="short_string", options=undefined.
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I figure encoding is probably constant for most users. For my use case, it's always "cesu8" (for utf8mb3).

@sandinmyjoints sandinmyjoints marked this pull request as ready for review January 22, 2024 21:19
@sandinmyjoints
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It looks like the CI failures are a few timeouts waiting for MySQL to come up. Unrelated to changes.

@wellwelwel
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wellwelwel commented Jan 22, 2024

It looks like the CI failures are a few timeouts waiting for MySQL to come up. Unrelated to changes.

Hi @sandinmyjoints, about the CI - OSX, please ignore them for now 🙋🏻‍♂️

I run the "re-run" from time to time until the tests runs to its end.

@sidorares
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lgtm, thanks @sandinmyjoints !

@wellwelwel
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A suggestion would be to require LRU as const LRU = require('lru-cache').default to improve the compatibility with Next/Nuxt, etc.

What do you think, @sandinmyjoints? 🙋🏻‍♂️


For context:

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@wellwelwel: updated!

@wellwelwel wellwelwel merged commit b95b3db into sidorares:master Jan 23, 2024
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wellwelwel commented Jan 23, 2024

Merging as feat to keep it on release and change logs 🧑🏻‍🔧

Vylpes pushed a commit to Vylpes/Droplet that referenced this pull request Apr 10, 2024
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [mysql2](https://sidorares.github.io/node-mysql2/docs) ([source](https://github.com/sidorares/node-mysql2)) | dependencies | minor | [`3.0.1` -> `3.9.3`](https://renovatebot.com/diffs/npm/mysql2/3.0.1/3.9.3) |

---

### Release Notes

<details>
<summary>sidorares/node-mysql2 (mysql2)</summary>

### [`v3.9.3`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#393-2024-03-26)

[Compare Source](sidorares/node-mysql2@v3.9.2...v3.9.3)

##### Bug Fixes

-   **security:** improve cache key formation ([#&#8203;2424](sidorares/node-mysql2#2424)) ([0d54b0c](sidorares/node-mysql2@0d54b0c))
    -   Fixes a potential parser cache poisoning attack vulnerability reported by Vsevolod Kokorin (Slonser) of Solidlab
-   update Amazon RDS SSL CA cert ([#&#8203;2131](sidorares/node-mysql2#2131)) ([d9dccfd](sidorares/node-mysql2@d9dccfd))

### [`v3.9.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#392-2024-02-26)

[Compare Source](sidorares/node-mysql2@v3.9.1...v3.9.2)

##### Bug Fixes

-   **stream:** premature close when it is paused ([#&#8203;2416](sidorares/node-mysql2#2416)) ([7c6bc64](sidorares/node-mysql2@7c6bc64))
-   **types:** expose TypeCast types ([#&#8203;2425](sidorares/node-mysql2#2425)) ([336a7f1](sidorares/node-mysql2@336a7f1))

### [`v3.9.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#391-2024-01-29)

[Compare Source](sidorares/node-mysql2@v3.9.0...v3.9.1)

##### Bug Fixes

-   **types:** support encoding for string type cast ([#&#8203;2407](sidorares/node-mysql2#2407)) ([1dc2011](sidorares/node-mysql2@1dc2011))

### [`v3.9.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#390-2024-01-26)

[Compare Source](sidorares/node-mysql2@v3.8.0...v3.9.0)

##### Features

-   introduce typeCast for `execute` method ([#&#8203;2398](sidorares/node-mysql2#2398)) ([baaa92a](sidorares/node-mysql2@baaa92a))

### [`v3.8.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#380-2024-01-23)

[Compare Source](sidorares/node-mysql2@v3.7.1...v3.8.0)

##### Features

-   **perf:** cache iconv decoder ([#&#8203;2391](sidorares/node-mysql2#2391)) ([b95b3db](sidorares/node-mysql2@b95b3db))

##### Bug Fixes

-   **stream:** premature close when using `for await` ([#&#8203;2389](sidorares/node-mysql2#2389)) ([af47148](sidorares/node-mysql2@af47148))
-   The removeIdleTimeoutConnectionsTimer did not clean up when the … ([#&#8203;2384](sidorares/node-mysql2#2384)) ([18a44f6](sidorares/node-mysql2@18a44f6))
-   **types:** add missing types to TypeCast ([#&#8203;2390](sidorares/node-mysql2#2390)) ([78ce495](sidorares/node-mysql2@78ce495))

### [`v3.7.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#371-2024-01-17)

[Compare Source](sidorares/node-mysql2@v3.7.0...v3.7.1)

##### Bug Fixes

-   add condition which allows code in callback to be reachable ([#&#8203;2376](sidorares/node-mysql2#2376)) ([8d5b903](sidorares/node-mysql2@8d5b903))

### [`v3.7.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#370-2024-01-07)

[Compare Source](sidorares/node-mysql2@v3.6.5...v3.7.0)

##### Features

-   **docs:** release documentation website ([#&#8203;2339](sidorares/node-mysql2#2339)) ([c0d77c0](sidorares/node-mysql2@c0d77c0))

### [`v3.6.5`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#365-2023-11-22)

[Compare Source](sidorares/node-mysql2@v3.6.4...v3.6.5)

##### Bug Fixes

-   add decodeuricomponent to parse uri encoded special characters in host, username, password and datbase keys ([#&#8203;2277](sidorares/node-mysql2#2277)) ([fe573ad](sidorares/node-mysql2@fe573ad))

### [`v3.6.4`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#364-2023-11-21)

[Compare Source](sidorares/node-mysql2@v3.6.3...v3.6.4)

##### Bug Fixes

-   malformed FieldPacket ([#&#8203;2280](sidorares/node-mysql2#2280)) ([8831e09](sidorares/node-mysql2@8831e09))
-   move missing options to ` ConnectionOptions  ` ([#&#8203;2288](sidorares/node-mysql2#2288)) ([5cd7639](sidorares/node-mysql2@5cd7639))

### [`v3.6.3`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#363-2023-11-03)

[Compare Source](sidorares/node-mysql2@v3.6.2...v3.6.3)

##### Bug Fixes

-   correctly pass values when used with sql-template-strings library ([#&#8203;2266](sidorares/node-mysql2#2266)) ([6444f99](sidorares/node-mysql2@6444f99))

### [`v3.6.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#362-2023-10-15)

[Compare Source](sidorares/node-mysql2@v3.6.1...v3.6.2)

##### Bug Fixes

-   sql-template-strings/tag compatibility ([#&#8203;2238](sidorares/node-mysql2#2238)) ([f2efe5a](sidorares/node-mysql2@f2efe5a))

### [`v3.6.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#361-2023-09-06)

[Compare Source](sidorares/node-mysql2@v3.6.0...v3.6.1)

##### Bug Fixes

-   EventEmitter on method signatures to use spread syntax ([#&#8203;2200](sidorares/node-mysql2#2200)) ([5d21b81](sidorares/node-mysql2@5d21b81))

### [`v3.6.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#360-2023-08-04)

[Compare Source](sidorares/node-mysql2@v3.5.2...v3.6.0)

##### Features

-   add conn-level `infileStreamFactory` option ([#&#8203;2159](sidorares/node-mysql2#2159)) ([5bed0f8](sidorares/node-mysql2@5bed0f8))

### [`v3.5.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#352-2023-07-14)

[Compare Source](sidorares/node-mysql2@v3.5.1...v3.5.2)

##### Bug Fixes

-   Update events that are propagated from pool cluster to include remove ([#&#8203;2114](sidorares/node-mysql2#2114)) ([927d209](sidorares/node-mysql2@927d209))

### [`v3.5.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#351-2023-07-10)

[Compare Source](sidorares/node-mysql2@v3.5.0...v3.5.1)

##### Bug Fixes

-   improvements to allow to use Bun and tls  ([#&#8203;2119](sidorares/node-mysql2#2119)) ([fd44a2a](sidorares/node-mysql2@fd44a2a))
-   missing `ResultSetHeader[]` to `query` and `execute` ([f649486](sidorares/node-mysql2@f649486))

### [`v3.5.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#350-2023-07-06)

[Compare Source](sidorares/node-mysql2@v3.4.5...v3.5.0)

##### Features

-   improved inspection of columns ([#&#8203;2112](sidorares/node-mysql2#2112)) ([69277aa](sidorares/node-mysql2@69277aa))

### [`v3.4.5`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#345-2023-07-05)

[Compare Source](sidorares/node-mysql2@v3.4.4...v3.4.5)

##### Bug Fixes

-   handle prepare response with actual number of parameter definition less than reported in the prepare header. Fixes [#&#8203;2052](sidorares/node-mysql2#2052) ([b658be0](sidorares/node-mysql2@b658be0))

### [`v3.4.4`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#344-2023-07-04)

[Compare Source](sidorares/node-mysql2@v3.4.3...v3.4.4)

##### Bug Fixes

-   add `ProcedureCallPacket` to `execute` overloads ([3566ef7](sidorares/node-mysql2@3566ef7))
-   add `ProcedureCallPacket` to `query` overloads ([352c3bc](sidorares/node-mysql2@352c3bc))
-   add `ProcedureCallPacket` to promise-based `execute` overloads ([8292416](sidorares/node-mysql2@8292416))
-   add `ProcedureCallPacket` to promise-based `query` overloads ([0f31a41](sidorares/node-mysql2@0f31a41))
-   create `ProcedureCallPacket` typings ([09ad1d2](sidorares/node-mysql2@09ad1d2))

### [`v3.4.3`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#343-2023-06-30)

[Compare Source](sidorares/node-mysql2@v3.4.2...v3.4.3)

##### Bug Fixes

-   remove acquireTimeout invalid option ([#&#8203;2095](sidorares/node-mysql2#2095)) ([eb311db](sidorares/node-mysql2@eb311db))

### [`v3.4.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#342-2023-06-26)

[Compare Source](sidorares/node-mysql2@v3.4.1...v3.4.2)

##### Bug Fixes

-   changing type files to declaration type files ([98e6f3a](sidorares/node-mysql2@98e6f3a))

### [`v3.4.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#341-2023-06-24)

[Compare Source](sidorares/node-mysql2@v3.4.0...v3.4.1)

##### Bug Fixes

-   `createPool` uri overload ([98623dd](sidorares/node-mysql2@98623dd))
-   `PoolCluster` typings ([3902ca6](sidorares/node-mysql2@3902ca6))
-   create promise-based `PoolCluster` typings ([7f38496](sidorares/node-mysql2@7f38496))
-   missing `parserCache` in `promise.js` ([7f35cf5](sidorares/node-mysql2@7f35cf5))
-   missing constants in `promise.js` ([4ce2c70](sidorares/node-mysql2@4ce2c70))
-   missing keys for `Types` constant ([86655ec](sidorares/node-mysql2@86655ec))
-   missing typings for `Charsets` constants ([01f77a0](sidorares/node-mysql2@01f77a0))
-   missing typings for `CharsetToEncoding` constants ([609229a](sidorares/node-mysql2@609229a))
-   missing typings for `parserCache` ([891a523](sidorares/node-mysql2@891a523))
-   missing typings for `Types` constant ([04601dd](sidorares/node-mysql2@04601dd))
-   rename file of typings `Charsets` constants ([51c4196](sidorares/node-mysql2@51c4196))

### [`v3.4.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#340-2023-06-19)

[Compare Source](sidorares/node-mysql2@v3.3.5...v3.4.0)

##### Features

-   support STATE_GTIDS session track information ([2b1520f](sidorares/node-mysql2@2b1520f))

### [`v3.3.5`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#335-2023-06-12)

[Compare Source](sidorares/node-mysql2@v3.3.4...v3.3.5)

##### Bug Fixes

-   `createPool` `promise` as `PromisePool` ([#&#8203;2060](sidorares/node-mysql2#2060)) ([ff3c36c](sidorares/node-mysql2@ff3c36c))
-   keepAliveInitialDelay not taking effect ([#&#8203;2043](sidorares/node-mysql2#2043)) ([585911c](sidorares/node-mysql2@585911c))

### [`v3.3.4`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#334-2023-06-11)

[Compare Source](sidorares/node-mysql2@v3.3.3...v3.3.4)

##### Bug Fixes

-   `PromisePoolConnection` import name ([76db54a](sidorares/node-mysql2@76db54a))
-   `releaseConnection` types and promise ([4aac9d6](sidorares/node-mysql2@4aac9d6))

### [`v3.3.3`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#333-2023-05-27)

[Compare Source](sidorares/node-mysql2@v3.3.2...v3.3.3)

##### Bug Fixes

-   add package.json to exports ([#&#8203;2026](sidorares/node-mysql2#2026)) ([09fd305](sidorares/node-mysql2@09fd305))

### [`v3.3.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#332-2023-05-23)

[Compare Source](sidorares/node-mysql2@v3.3.1...v3.3.2)

##### Bug Fixes

-   respect enableKeepAlive option ([#&#8203;2016](sidorares/node-mysql2#2016)) ([f465c3e](sidorares/node-mysql2@f465c3e))

### [`v3.3.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#331-2023-05-11)

[Compare Source](sidorares/node-mysql2@v3.3.0...v3.3.1)

##### Bug Fixes

-   LRU constructor ([#&#8203;2004](sidorares/node-mysql2#2004)) ([fd3d117](sidorares/node-mysql2@fd3d117))
-   Missing types in "mysql" import ([#&#8203;1995](sidorares/node-mysql2#1995)) ([b8c79d0](sidorares/node-mysql2@b8c79d0))

### [`v3.3.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#330-2023-05-06)

[Compare Source](sidorares/node-mysql2@v3.2.4...v3.3.0)

##### Features

-   Added updated/new error codes gathered from MySQL 8.0 source code ([#&#8203;1990](sidorares/node-mysql2#1990)) ([85dc6e5](sidorares/node-mysql2@85dc6e5))

### [`v3.2.4`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#324-2023-04-25)

[Compare Source](sidorares/node-mysql2@v3.2.3...v3.2.4)

##### Bug Fixes

-   **server:** Added missing encoding argument to server-handshake ([#&#8203;1976](sidorares/node-mysql2#1976)) ([a4b6b22](sidorares/node-mysql2@a4b6b22))

### [`v3.2.3`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#323-2023-04-16)

[Compare Source](sidorares/node-mysql2@v3.2.2...v3.2.3)

##### Bug Fixes

-   **types:** add decimalNumbers to createConnection/createPool typings. fixes [#&#8203;1803](sidorares/node-mysql2#1803) ([#&#8203;1817](sidorares/node-mysql2#1817)) ([bb48462](sidorares/node-mysql2@bb48462))

### [`v3.2.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#322-2023-04-16)

[Compare Source](sidorares/node-mysql2@v3.2.1...v3.2.2)

##### Bug Fixes

-   `ConnectionOptions` conflict between `mysql` and `mysql/promise` ([#&#8203;1955](sidorares/node-mysql2#1955)) ([eca8bda](sidorares/node-mysql2@eca8bda))

### [`v3.2.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#321-2023-04-13)

[Compare Source](sidorares/node-mysql2@v3.2.0...v3.2.1)

##### Bug Fixes

-   Add typings for Connection.promise(). ([#&#8203;1949](sidorares/node-mysql2#1949)) ([e3ca310](sidorares/node-mysql2@e3ca310))
-   PoolConnection redundancy when extending Connection interface in TypeScript ([7c62d11](sidorares/node-mysql2@7c62d11))

### [`v3.2.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#320-2023-03-03)

[Compare Source](sidorares/node-mysql2@v3.1.2...v3.2.0)

##### Features

-   maxVersion ssl option to tls.createSecureContext ([0c40ef9](sidorares/node-mysql2@0c40ef9))

### [`v3.1.2`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#312-2023-02-08)

[Compare Source](sidorares/node-mysql2@v3.1.1...v3.1.2)

##### Bug Fixes

-   update `lru-cache` reset method to clear ([114f266](sidorares/node-mysql2@114f266))

### [`v3.1.1`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#311-2023-02-07)

[Compare Source](sidorares/node-mysql2@v3.1.0...v3.1.1)

##### Bug Fixes

-   remove accidental log in caching_sha2\_password.js ([c1202b6](sidorares/node-mysql2@c1202b6))

### [`v3.1.0`](https://github.com/sidorares/node-mysql2/blob/HEAD/Changelog.md#310-2023-01-30)

[Compare Source](sidorares/node-mysql2@v3.0.1...v3.1.0)

##### Features

-   cleanup buffer/string conversions in hashing/xor helpers that were failing in Bun ([a2392e2](sidorares/node-mysql2@a2392e2))

##### Bug Fixes

-   when port is pased as a string convert it to a number (Bun's net.connect does not automatically convert this) ([703ecb2](sidorares/node-mysql2@703ecb2))

</details>

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