feat: Race top n nodes when making requests #25
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Co-authored-by: Diego Rodríguez Baquero <diego@protocol.ai>
* Abort on error (#19) * feat: use controller from options if exists. abort fetch if error occurs. * test: check if external abort controller is used * build: move build output to dist/ folder * fix: newline * 0.1.1 * Build exports (#20) * chore: rename file * feat: add new entrypoint with exports. Switch Saturn to named export * build: expose entire module instead of just the default export * docs: update README * 0.2.0 * feat: include worker scopes when checking for browser runtime (#21) * 0.3.0 --------- Co-authored-by: Eric Guan <guanzo91@gmail.com>
guanzo
reviewed
Oct 24, 2023
src/client.js
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| const controllers = [] | ||
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| const createFetchPromise = async (origin) => { | ||
| options.url = origin |
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Better for each function call to make a copy of the options object instead of sharing it and mutating fields.
Suggested change
| options.url = origin | |
| const fetchOptions = { ...options, url: origin } // need to rename the rest of the references |
This is only a shallow copy but should suffice.
guanzo
reviewed
Oct 24, 2023
guanzo
reviewed
Oct 24, 2023
guanzo
reviewed
Oct 24, 2023
AmeanAsad
changed the title
guanzo
reviewed
Oct 24, 2023
| if (fallbackCount > this.opts.fallbackLimit) { | ||
| return | ||
| } | ||
| opts.url = origin.url | ||
| if (opts.raceNodes) { | ||
| const origins = nodes.slice(i, i + Saturn.defaultRaceCount).map((node) => node.url) |
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So if we have nodes a,b,c,d,e, then the race groups are:
- a,b,c
- 1st fallback: b,c,d
- 2nd fallback: c,d,e
Is that right?
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That is correct. Will also note that this is not necessarily the best way to do it and has some obvious room for improvement. For example:
- If node c fails, it we might hit it twice again before another good fallback is contacted.
I think as a next step, the best way to do this is to remove nodes that fail and such that:
- initial group is a, b, c. Assume node c fails
- 1st fallback is a, b, d and so on
I think this can be better achieved with a hashring implementation but we can re-evaluate.
guanzo
approved these changes
Oct 26, 2023
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