algolia-reference-architecture

Implement Algolia reference architecture: index design, multi-index strategy, data pipeline, search service layer, and frontend/backend separation. Trigger: "algolia architecture", "algolia best practices", "algolia project structure", "how to organize algolia", "algolia index design".

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Repositorio: jeremylongshore/tons-of-skills-marketplace
Última actividad en el origen: 24 de agosto de 2026 a las 05:08
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name	algolia-reference-architecture
description	Implement Algolia reference architecture: index design, multi-index strategy, data pipeline, search service layer, and frontend/backend separation. Trigger: "algolia architecture", "algolia best practices", "algolia project structure", "how to organize algolia", "algolia index design".
allowed-tools	Read, Grep
version	1.7.0
license	MIT
author	Jeremy Longshore <jeremy@intentsolutions.io>
tags	["saas","search","algolia"]
compatibility	Designed for Claude Code

Algolia Reference Architecture

Overview

Production-ready architecture for Algolia-powered search. Covers index design, data pipeline from source to Algolia, service layer patterns, and frontend integration.

Prerequisites

A source-of-truth datastore, an approved transformation boundary, and explicit ownership for indexing and search-serving services.
Separate Admin and search-only credentials, kept on the backend and frontend respectively.
An environment and index naming convention that permits safe rehearsal and rollback.

Instructions

Use the architecture, project layout, and design patterns as a composable reference. Keep indexing, settings management, and search serving as separately testable boundaries rather than coupling them to a frontend component.

Examples

The diagrams and TypeScript patterns below demonstrate the reference topology, record transformation, settings-as-code, and service-layer contracts. Adapt the interfaces to your source schema while preserving the key boundary between write and search credentials.

Architecture Overview

┌──────────────────────────────────────────────────────────────┐
│                      Frontend                                 │
│  InstantSearch.js / React InstantSearch                       │
│  Uses: liteClient (search-only key)                          │
│  Sends: search-insights events (clicks, conversions)          │
└───────────────────────┬──────────────────────────────────────┘
                        │ Search + Events
                        ▼
┌──────────────────────────────────────────────────────────────┐
│                   Algolia Cloud                               │
│  ┌─────────┐  ┌──────────────┐  ┌─────────────┐             │
│  │ Search   │  │ Analytics    │  │ Recommend   │             │
│  │ Engine   │  │ + Insights   │  │ (ML-based)  │             │
│  └─────────┘  └──────────────┘  └─────────────┘             │
└───────────────────────▲──────────────────────────────────────┘
                        │ Indexing (admin key)
                        │
┌──────────────────────────────────────────────────────────────┐
│                    Backend Service                            │
│  ┌────────────┐  ┌──────────────┐  ┌─────────────────┐      │
│  │ Search     │  │ Indexing     │  │ Settings        │      │
│  │ Service    │  │ Pipeline     │  │ Manager         │      │
│  └────────────┘  └──────┬───────┘  └─────────────────┘      │
│                         │                                     │
│  ┌──────────────────────▼────────────────────────────┐       │
│  │              Source Database                        │       │
│  │  PostgreSQL / MongoDB / CMS / External API          │       │
│  └────────────────────────────────────────────────────┘       │
└──────────────────────────────────────────────────────────────┘

Project Structure

src/
├── algolia/
│   ├── client.ts           # Singleton client (see algolia-sdk-patterns)
│   ├── indices.ts          # Index name constants + environment prefixing
│   ├── settings/
│   │   ├── products.ts     # Products index settings
│   │   ├── articles.ts     # Articles index settings
│   │   └── apply.ts        # Script to apply all settings
│   └── transforms/
│       ├── product.ts      # DB record → Algolia record transformer
│       └── article.ts      # DB record → Algolia record transformer
├── services/
│   ├── search.ts           # Search service (wraps Algolia client)
│   └── indexing.ts         # Indexing pipeline (DB → transform → Algolia)
├── api/
│   ├── search.ts           # Search endpoint (returns Algolia results)
│   └── reindex.ts          # Admin endpoint to trigger reindex
└── jobs/
    └── sync-algolia.ts     # Cron job for periodic full sync

// src/algolia/indices.ts
const ENV = process.env.NODE_ENV === 'production' ? '' : `${process.env.NODE_ENV}_`;

export const INDICES = {
  products:  `${ENV}products`,
  articles:  `${ENV}articles`,
  faq:       `${ENV}faq`,
  users:     `${ENV}users`,     // Internal search only (never expose to frontend)
} as const;

export type IndexName = typeof INDICES[keyof typeof INDICES];

// src/algolia/transforms/product.ts
import type { Product } from '../db/types';

interface AlgoliaProduct {
  objectID: string;
  name: string;
  description: string;
  category: string;
  brand: string;
  price: number;
  rating: number;
  review_count: number;
  in_stock: boolean;
  image_url: string;
  _tags: string[];        // Algolia convention: filterable tags
}

export function transformProduct(product: Product): AlgoliaProduct {
  return {
    objectID: product.id,
    name: product.name,
    description: product.description?.substring(0, 5000) || '',  // Truncate
    category: product.category.name,
    brand: product.brand.name,
    price: product.price / 100,                  // Cents → dollars
    rating: product.avgRating,
    review_count: product.reviewCount,
    in_stock: product.inventory > 0,
    image_url: product.images[0]?.url || '',
    _tags: [
      product.category.slug,
      ...(product.isFeatured ? ['featured'] : []),
      ...(product.isNew ? ['new-arrival'] : []),
    ],
  };
}

// src/algolia/settings/products.ts
import type { IndexSettings } from 'algoliasearch';

export const productSettings: IndexSettings = {
  searchableAttributes: [
    'name',
    'brand',
    'category',
    'unordered(description)',
  ],
  attributesForFaceting: [
    'searchable(brand)',
    'category',
    'filterOnly(price)',
    'filterOnly(in_stock)',
    '_tags',
  ],
  customRanking: ['desc(review_count)', 'desc(rating)'],
  attributesToRetrieve: ['name', 'brand', 'price', 'image_url', 'category', 'rating'],
  attributesToHighlight: ['name', 'description'],
  attributesToSnippet: ['description:30'],
  unretrievableAttributes: ['_tags'],
  distinct: 1,
  attributeForDistinct: 'product_group_id',
  replicas: [
    'virtual(products_price_asc)',
    'virtual(products_price_desc)',
    'virtual(products_newest)',
  ],
};

// src/algolia/settings/apply.ts
import { getClient } from '../client';
import { INDICES } from '../indices';
import { productSettings } from './products';

async function applyAllSettings() {
  const client = getClient();
  await client.setSettings({ indexName: INDICES.products, indexSettings: productSettings });
  console.log('All Algolia settings applied');
}

// src/services/search.ts
import { getClient } from '../algolia/client';
import { INDICES } from '../algolia/indices';
import { ApiError } from 'algoliasearch';

export class SearchService {
  private client = getClient();

  async searchProducts(params: {
    query: string;
    filters?: string;
    facetFilters?: string[][];
    page?: number;
    hitsPerPage?: number;
  }) {
    try {
      return await this.client.searchSingleIndex({
        indexName: INDICES.products,
        searchParams: {
          query: params.query,
          filters: params.filters,
          facetFilters: params.facetFilters,
          page: params.page ?? 0,
          hitsPerPage: params.hitsPerPage ?? 20,
          facets: ['category', 'brand'],
          clickAnalytics: true,
        },
      });
    } catch (error) {
      if (error instanceof ApiError && error.status === 404) {
        return { hits: [], nbHits: 0, nbPages: 0, page: 0 };
      }
      throw error;
    }
  }

  async federatedSearch(query: string) {
    const { results } = await this.client.search({
      requests: [
        { indexName: INDICES.products, query, hitsPerPage: 5 },
        { indexName: INDICES.articles, query, hitsPerPage: 3 },
        { indexName: INDICES.faq, query, hitsPerPage: 3 },
      ],
    });
    return results;
  }
}

Issue	Cause	Solution
Circular dependency	Service imports client imports service	Use lazy initialization
Config drift	Dashboard edits not in code	Apply settings from code in CI
Transform errors	DB schema change	Add validation in transformer
Index name typo	Hardcoded strings	Use `INDICES` constants