1 Lottery Colour Prediction – Hot/Cold Digits, Trends & Fun Stats

Live Data & Window

Key Stats

Distributions & Transition Matrix

Last Results (Preview)

How These “Predictions” Are Calculated

• Windowed stats: You choose a window (20/50/100/200). We compute digit frequencies, colour shares and streaks on that subset.
• Markov (transition) model: We estimate a first-order transition matrix P(next_colour | current_colour) from the window. The “Next-Colour” line shows the highest probability given the latest colour. This is fun-only, not financial advice.
• Live data: We call /wp-json/one/v1/today plus (if available) /wp-json/one/v1/history. We support ETag (conditional GET) to reduce bandwidth.
• Limits: Chance-based outcomes can deviate from short-term stats; patterns can break anytime. Please play responsibly (18+).

Tip: Larger windows are smoother but slower to react; smaller windows are more reactive but noisy.

← 1 Lottery Colour Prediction

1 Lottery API – Production Checklist & Best Practices

This section documents the public read endpoints used on this site and the recommended server behaviors for smooth, low-latency widgets.

1) Endpoints & Schemas

• GET /wp-json/one/v1/today → Live window for the current day.
  Response (example):

  {
    "date": "2025-09-16",
    "timezone": "+05:30",
    "items": [
      {"period":"20250916-1200","time":"12:00","result":"7","colour":"Green"},
      {"period":"20250916-1201","time":"12:01","result":"0","colour":"Violet"}
    ]
  }
        

• GET /wp-json/one/v1/history?limit=&offset=&since=&after=&order= → historical slice.
  Recommended query params:
  • limit (1–500, default 200), offset (for pagination)
  • since=YYYY-MM-DD (UTC date) or after=YYYYMMDD-HHMM (period id)
  • order=desc|asc (default desc)
• POST /wp-json/one/v1/admin/push (write) & POST /wp-json/one/v1/admin/reset (maintenance) — authenticated.

2) Caching & Freshness

• ETag + 304 on /today and /history to avoid re-sending unchanged JSON.
• Cache-Control for /today: public, max-age=5, stale-while-revalidate=30 — keeps widgets snappy with minimal flicker.
• Stable hashing: compute ETag from the exact JSON payload (e.g., md5( wp_json_encode( $data ) )).

/** In your plugin main file */
add_filter('rest_post_dispatch', function($result, $server, $request){
  $route = $request->get_route();
  if (strpos($route, '/one/v1/today') !== false || strpos($route, '/one/v1/history') !== false) {
    $data = $result->get_data();
    $json = wp_json_encode($data);
    $etag = '"' . md5($json) . '"';

    // Conditional GET
    $if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? trim($_SERVER['HTTP_IF_NONE_MATCH']) : '';
    if ($if_none_match === $etag) {
      // 304, no body
      header('ETag: ' . $etag);
      header('Cache-Control: public, max-age=5, stale-while-revalidate=30');
      status_header(304);
      exit; // stop further output
    }
    // Fresh
    header('ETag: ' . $etag);
    header('Cache-Control: public, max-age=5, stale-while-revalidate=30');
    header('Content-Type: application/json; charset=utf-8');
  }
  return $result;
}, 10, 3);

/** Public CORS (read-only). Keep admin writes auth-only & no wildcard CORS. */
add_action('rest_api_init', function(){
  add_action('rest_pre_serve_request', function($served, $result, $request){
    $route = $request->get_route();
    if (strpos($route, '/one/v1/') !== false && $request->get_method() === 'GET') {
      header('Access-Control-Allow-Origin: *');
      header('Vary: Origin');
    }
    return $served;
  }, 10, 3);
});
    

3) Filtering, Paging & Incremental Sync

• since: /history?since=2025-09-01 — return all rows on/after that date.
• after: /history?after=20250916-1200 — return rows strictly after that period id.
• Order & paging: ensure deterministic results with order=asc|desc, plus limit/offset.

register_rest_route('one/v1', '/history', [
  'methods'  => 'GET',
  'callback' => function(WP_REST_Request $req){
    $limit = max(1, min(500, intval($req->get_param('limit') ?: 200)));
    $offset = max(0, intval($req->get_param('offset') ?: 0));
    $since = sanitize_text_field($req->get_param('since') ?: '');
    $after = sanitize_text_field($req->get_param('after') ?: '');
    $order = strtolower($req->get_param('order') ?: 'desc');
    $order = in_array($order, ['asc','desc'], true) ? $order : 'desc';

    // Example: read from your storage (file/DB). Filter by $since/$after.
    $rows = one_lottery_storage_read_all(); // return most-recent-first array
    if ($since) { $rows = array_filter($rows, fn($r)=>substr($r['period'],0,8) >= str_replace('-','',$since)); }
    if ($after) { $rows = array_filter($rows, fn($r)=>strcmp($r['period'],$after) > 0); }
    if ($order === 'asc') { $rows = array_reverse($rows); }

    $slice = array_slice(array_values($rows), $offset, $limit);
    return ['items' => $slice];
  },
  'permission_callback' => '__return_true',
]);
    

4) Compression

• Enable gzip/brotli for JSON to cut bandwidth.

gzip on;
gzip_comp_level 5;
gzip_min_length 256;
gzip_types application/json application/javascript text/plain text/css;
# If you use brotli:
brotli on;
brotli_comp_level 5;
brotli_types application/json application/javascript text/plain text/css;
    

5) Security

• Writes require auth: use WordPress Application Passwords (Basic Auth) or a long random Bearer token stored server-side.
• Rate limit public reads (e.g., 60 req/min/IP) to absorb spikes. Return HTTP 429 with Retry-After.
• Validate input on /admin/push: period matches ^\d{8}-\d{4}$, time is HH:MM, result in 0–9, colour in {Red, Green, Violet}.
• Audit log for writes with timestamp/user/IP and rotate logs.

add_filter('rest_request_before_callbacks', function($response, $handler, $request){
  $route = $request->get_route();
  if (strpos($route, '/one/v1/') !== false && $request->get_method()==='GET') {
    $ip = $_SERVER['REMOTE_ADDR'] ?? 'na';
    $key = 'one_rl_' . md5($ip);
    $hits = (int) get_transient($key);
    if ($hits > 60) { // >60 req/min
      return new WP_Error('rate_limited','Too Many Requests', ['status'=>429, 'Retry-After'=>60]);
    }
    set_transient($key, $hits+1, MINUTE_IN_SECONDS);
  }
  return $response;
}, 10, 3);
    

6) Versioning & Time

• Namespace already includes version (one/v1); reserve v2 for breaking changes.
• All times are IST (UTC+05:30). period uses YYYYMMDD-HHMM in IST.

7) Errors

• Content-Type: application/json; charset=utf-8
• Shape (example): { "error": { "code":"rate_limited", "message":"Too Many Requests" } }
• Use proper HTTP status: 200/304/400/401/403/404/429/500.

8) cURL Examples

# Conditional GET with ETag (client-side caching)
curl -i -H "If-None-Match: <etag-from-last-response>" \
  https://www.keralalottery.info/wp-json/one/v1/today

# Historical slice since a date
curl -s "https://www.keralalottery.info/wp-json/one/v1/history?since=2025-09-01&limit=200&order=asc"

# Incremental fetch after a period id
curl -s "https://www.keralalottery.info/wp-json/one/v1/history?after=20250916-1200&limit=200"

# Admin push (WordPress Application Password)
curl -u "KeralaLottery:<YOUR_APP_PASSWORD>" \
  -H "Content-Type: application/json" \
  -d '{"period":"20250916-1300","time":"13:00","result":"5","colour":"Red"}' \
  https://www.keralalottery.info/wp-json/one/v1/admin/push
  

9) Optional: OpenAPI Sketch

openapi: 3.0.0
info:
  title: 1 Lottery API
  version: 1.0.0
servers:
  - url: https://www.keralalottery.info/wp-json/one/v1
paths:
  /today:
    get:
      summary: Live results for today
      responses:
        "200": {description: OK}
        "304": {description: Not Modified}
  /history:
    get:
      summary: Historical results
      parameters:
        - {name: limit, in: query, schema: {type: integer, minimum: 1, maximum: 500}}
        - {name: offset, in: query, schema: {type: integer, minimum: 0}}
        - {name: since,  in: query, schema: {type: string, pattern: "^\d{4}-\d{2}-\d{2}$"}}
        - {name: after,  in: query, schema: {type: string, pattern: "^\d{8}-\d{4}$"}}
        - {name: order,  in: query, schema: {type: string, enum: [asc,desc]}}
      responses:
        "200": {description: OK}
        "304": {description: Not Modified}
  /admin/push:
    post:
      security: [{basicAuth: []}]
      responses: {"200": {description: OK}}
components:
  securitySchemes:
    basicAuth: {type: http, scheme: basic}
  

10) Monitoring

• Add X-Trace-Id and log it with each request to correlate errors.
• Expose a lightweight /wp-json/one/v1/health for uptime checks (returns 200 + storage status).

FAQ – Colour Prediction

More 1 Lottery Guides

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