* perf(accounts): kill sidebar/sparkline N+1s and cache the sidebar The dashboard was issuing hundreds of per-account `SELECT 1` and polymorphic `accountable` lookups on every page load. Sidebar render alone hit the DB ~50–100× and ran twice per request (mobile + desktop). Changes: - AccountableSparklinesController: short-circuit `requires_normalized_aggregation?` to Investment/Crypto only and collapse the per-account `linked?` loop into a single `EXISTS`. Kills the N+1 `AccountProvider Exists?` queries on every sparkline endpoint. - BalanceSheet::AccountTotals#visible_accounts: preload `:accountable`, `:plaid_account`, `:simplefin_account`, and `account_providers: :provider` so the sidebar's `account.subtype` / `account.linked?` / `account.provider` calls don't trigger per-row polymorphic loads. - AccountsController#index: same preloads on `@manual_accounts`. - accounts/index/_account_groups.erb: extend the existing `Preloader` call to batch-load accountable + provider associations so the per-provider-item partials (Plaid, SimpleFIN, Coinbase, etc.) stop re-issuing N+1s when rendering account rows on /accounts. - accounts/_account_sidebar_tabs.html.erb: wrap the partial in a `cache` block keyed on the family's data-version, the current user, shares fingerprint, locale, mobile flag, active tab, and a path-derived "current account" component (`sidebar_active_account_id` helper). The sidebar is rendered on every page in the layout (twice — mobile + desktop drawers), so most navigations now serve the cached fragment instead of re-walking accounts/balances. Local impact (DZG family, 23 accounts, 6.1k transactions): - Dashboard `/`: ~6.5s → ~1.95s - /accounts: ~2.7s → ~0.85s on warm cache - /accountable_sparklines/*: per-request N+1s eliminated; remaining cost is request boilerplate which can be addressed by bumping `RAILS_MAX_THREADS` (the dashboard fans out 5 sparkline turbo frames in parallel and Puma's default 3 threads serialize them). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(perf): address PR review on sidebar/sparkline perf changes - AccountableSparklinesController#requires_normalized_aggregation? also matches legacy plaid_account_id / simplefin_account_id links, not just new-style account_providers, so investment/crypto accounts in the legacy linking state still get LinkedInvestmentSeriesNormalizer applied (Codex P1 / CodeRabbit major). - Sidebar share fingerprint includes both `count` and `max(updated_at)` so deleting a non-most-recent AccountShare invalidates the cached fragment for users who lost access (Codex P1). - Move the sidebar cache-key construction (incl. the AccountShare query) from the ERB into a new `account_sidebar_tabs_cache_key` helper, per the project's "no heavy logic in ERB" rule (CodeRabbit). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * refactor(perf): address human review on perf PR - Account.linked: new SQL-level scope mirroring `Account#linked?` so the controller and per-instance method share one definition. Removes the duplicated raw SQL string in `AccountableSparklinesController#requires_normalized_aggregation?`, which now reads `accounts.linked.exists?` (jjmata, sure-design). - AccountsHelper: move `sidebar_active_account_id` and `account_sidebar_tabs_cache_key` out of `ApplicationHelper`. The cache-key helper also collapses the AccountShare `count` + `max(updated_at)` fingerprint into a single `pick` query so we don't pay two round-trips on every render (jjmata, sure-design). - test/models/account/linkable_test.rb: pin the `Account.linked` scope against all three link types (account_providers, legacy plaid_account, legacy simplefin_account) so any future schema change that diverges the SQL definition from `linked?` breaks a test instead of silently serving wrong sparkline aggregations (sure-design). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> * fix(perf): correct shares cache fingerprint on raw-SQL pick `pick(Arel.sql("count(*), max(updated_at)"))` passes a single comma- separated fragment, which Rails returns as a String (per the documented behavior of `pluck` with SQL fragments). The previous `max_at&.to_i` silently truncated `"2025-05-06 12:34:56.789 UTC"` to `2025`, so the sidebar cache key would not change for share `updated_at` movements within the same calendar year — including share deletions — leaving revoked users with a stale sidebar until the 12h expiry. Pass the aggregates as two separate `Arel.sql` args and just concatenate the raw String values into the cache key. The values only need to be stable for a given DB state, not numerically meaningful. Caught by CodeRabbit on PR #1683. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Sure: The personal finance app for everyone
Get involved: Discord • Website • Issues
Important
This repository is a community fork of the now-abandoned Maybe Finance project.
Learn more in their final release doc.
Backstory
The Maybe Finance team spent most of 2021–2022 building a full-featured personal finance and wealth management app. It even included an “Ask an Advisor” feature that connected users with a real CFP/CFA — all included with your subscription.
The business end of things didn't work out, and so they stopped developing the app in mid-2023.
After spending nearly $1 million on development (employees, contractors, data providers, infra, etc.), the team open-sourced the app. Their goal was to let users self-host it for free — and eventually launch a hosted version for a small fee.
They actually did launch that hosted version … briefly.
That also didn’t work out — at least not as a sustainable B2C business — so now here we are: hosting a community-maintained fork to keep the codebase alive and see where this can go next.
Join us!
Hosting Sure
Sure is a fully working personal finance app that can be self hosted with Docker.
Forking and Attribution
This repo is a community fork of the archived Maybe Finance repo. You’re free to fork it under the AGPLv3 license — but we’d love it if you stuck around and contributed here instead.
To stay compliant and avoid trademark issues:
- Be sure to include the original AGPLv3 license and clearly state in your README that your fork is based on Maybe Finance but is not affiliated with or endorsed by Maybe Finance Inc.
- "Maybe" is a trademark of Maybe Finance Inc. and therefore, use of it is NOT allowed in forked repositories (or the logo)
Performance Issues
With data-heavy apps, inevitably, there are performance issues. We've set up a public dashboard showing the problematic requests seen on the demo site, along with the stacktraces to help debug them.
https://www.skylight.io/app/applications/s6PEZSKwcklL/recent/6h/endpoints
Any contributions that help improve performance are very much welcome.
Local Development Setup
If you are trying to self-host the app, read this guide to get started.
The instructions below are for developers to get started with contributing to the app.
Requirements
- See
.ruby-versionfile for required Ruby version - PostgreSQL >9.3 (latest stable version recommended)
- Redis > 5.4 (latest stable version recommended)
Getting Started
cd sure
cp .env.local.example .env.local
bin/setup
bin/dev
# Optionally, load demo data
rake demo_data:default
Visit http://localhost:3000 to view the app.
If you loaded the optional demo data, log in with these credentials:
- Email:
user@example.com - Password:
Password1!
For further instructions, see guides below.
Setup Guides
- Mac dev setup
- Linux dev setup
- Windows dev setup
- Dev containers - visit this guide
One-click Install
Managed OpenClaw for Sure Finances
License and Trademarks
Maybe and Sure are both distributed under an AGPLv3 license.
- "Maybe" is a trademark of Maybe Finance, Inc.
- "Sure" is not, and refers to this community fork.
